because bitcoin functionality comes at a mining cost.. and is a international currency.. so there is naturally a wide spread of speculation of the market price possibility at any given time

take for instance if the low average electric price for a fair collective of miners starts at <$0.04
take for instance if the high average electric price for a fair collective of miners tops at >$0.50

means there is a wide speculation window at any point that the price can swing upto 12x+ from its periodic bottom

this is seen for example where if in the pacific islands(most expensive to mine) their costs per BTC to mine are several hundred thousand dollars. they wont mine but would be happy to market buy even if the market shifted up into several hundred thousand of dollars, as its still cheaper than mining bitcoin

and then in the mid/northern-Eurasia regions where electric costs are low. they would mine and want to sell even if the market price was low
this creates a wide window of speculative possibility. where the window itself also increases as the hashrate/difficulty increases over periods

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the temporary media drama just causes little waves in the market.. emphasis temporary events. try not to get emotional about the temporary events and instead plan for the main market cycles and statistics of the long term. then use the short lived media drama to benefit the most. for instance, any temporary dip should be seen as discount days

mining will never end unless the whole consensus decide to swap to silly stupid things like PoS

there will always be a mining cost of PoW that worldwide would be a gap of a 12 factor as long as electric had a world wide gap of 12 factor
all that changes is if its a window gap of 12x that is worth $10-$120  or $1m-$12m or somewhere in between

the position of that bottom top window is depending on participants and competition but the economics of the gap of the international window of speculation will always be wide if there is always a world wide electric difference that wide

Even if Bitcoin is globally accepted by everyone, including the government, like you said, it cannot make the price of Bitcoin stable because Bitcoin is not like a stable fiat currency. 

There will always be hate speech and unrealistic action by some non-Bitcoiners, as long as they don't like Bitcoin. Believe me, not everyone must like Bitcoin. 

I don't also think that the government will allow Bitcoin to take over the fiat currency for every transaction. Trump once said that he hates Bitcoin because it's competing against the dollar. 

Lastly, according to some experts, it's going to take about a century and some years before the last halving will take place, but that's not going to stop Bitcoin from being a POW coin. So, I don't think Bitcoin can go from its rising and falling algorithm to becoming a stable coin. 

I think I'm the only person that don't really want the whole to adopt Bitcoin. I want it to be something entirely special on its own. I feel that if the whole world adopts Bitcoin, the government will then have full interest in it, and would like to have majority of control and even change the system from what it's currently is, they will change it in a way that will be suitable for them, and i wouldn't like such. So far we have seen how they are penetrating the crypto community, and I just don't like it.

It will still happen because after all it is one of the characteristics of bitcoin because indeed bitcoin fluctuations will continue to occur considering this is one of its uniqueness.
So this will not stop and I don't think we think about the word if because after all bitcoin will still work according to the conditions that have been set before, especially when talking about halving which can indeed be said to be one of the agendas in the original plan from bitcoin.

So that in the end the increase and decrease will clearly continue to occur and indeed it is a condition that is considered a balance because there can be no increase if there is no decrease especially that is what makes most like bitcoin because that is how bitcoin works even though the increase and decrease continue to occur but in the end the progress remains a good thing.

Bitcoin has  always had volatility and the fact that it is now regarded officially as a commodity innwall street means that the price will always be in one of the two possible directions — up or down. So that's something that's not going to change. what might change however, is the volatility. We might see less and less volatility as the price reaches certain price levels and more people nations get aboard our bandwagon. The speculation won't stopping especially now that more institutions, countries and big players want a piece of the Bitcoin pie.

For now, let’s just settle with some flaws of bitcoin. However, with all these imperfections, if we are only aware on how to handle this calmly, we won’t get into getting trouble with bitcoin, but would still end up profitable at the end of the day. Sooner or later, when there are no longer contradicting institutions on bitcoin and everything will go smooth sailing, and bitcoin will become a global currency or a reserved one, at least we will be able to see bitcoin in a calmer and more peaceful bitcoin journey, patience is the key.

I do not think that these three will be the factor to end BTC's volatility.  The rise and fall of BTC market price is dictated by supply and demand.  I believe that Bitcoin will continuously rise and fall as long as the ratio of demand and supply keeps on changing.  For me, as long as Bitcoin has not been replaced by more sophisticated and advanced financial technology, its demand will keep on existing.

Miners as long as mining Bitcoin is profitable will continue to mine blocks full of transactions as a reward.  If there is no profit to be made on mining, it is obvious that most of these miners will stop pointing their hashes to the Bitcoin network.

The price of BTC will continue to fluctuate because there are always people who will cash out to take their profit.

patience is key like you said Sir, as you had pointed, BTC has some flaws, the trilima problem which if any tech solves it will drastically shift attention, we believe that there is always something better and I also believe same, so let's watch patiently.

Wide adoption means more money into the market and more money means more trading volume thus more volatility. I think when more people are trading BTC they will be doing speculation on different levels. Which means some will hold, some will sell, some will buy, etc. The difference between demand and supply will be bigger if more people are trading in crypto. Although currently People (individuals hold most of the BTC).

And remaining amount is around 1,222,318.8 Which means this amount will not be bought by one or more companies like Grayscale etc. However, some parts of it will be purchased by individuals from all over the world. This indicates that it will not be centralized ever until it's not forced to run on PoS consensus if it's possible now to shift! Overall I think we are safe even after the halving.