Sometimes people find DCA is less emotional because if you buy and later it drops 10% then you don't feel the pain as much as if you'd purchased in a lump sum.  Of course if it goes up 10%, you don't gain as much, but people feel the pain of loss more than the pleasure of gain.   If your holding term is long enough then it doesn't matter all that much.  Years vs days or weeks for example.  For the most part, anyone who has purchased (or mined) at any time since 2009 with the exception of a few months at the end of last year is ahead of the game. 

DCA is very efficient to accumulate bitcoin and grow your portfolio overtime. You can use as little as $10 to invest consistently and persistently from your extra cash that you have. Before you know it in few years, you will have some good amount of bitcoin in your portfolio. Bitcoin price waits for no man, likewise time. I believe that the price of bitcoin will increase overtime because bitcoin is still in her early days.

Depending on your strategy for investing in BTC, what do you want? Lump sum, DCA, Buy Dip? Many more?

I think every investor has their own way to do their BTC accumulation for a long time, but what is often discussed here maybe some of us are mostly with the DCA method that's what I do.

At least by buying once a week - once every two weeks or once a month depending on the money available.

I haven't really used any other method to use Bitcoin aside DCA, my mentor that introduced me to Bitcoin actually explained to me that aside DCA strategy there's lump sum and buying on the dips but I was more comfortable with DCA strategy as it's more safe and stress-free for me. With DCA strategy you can budget a little amount of money from your salary or your business and buy, I think most of Bitcoin's investors use the DCA because you can buy at any time that pleases you with any amount you can afford.

Your opinion towards Bitcoin investment is valid, so long as in some way, you find a means to keep building your portfolio. It’s important that you don’t limit your portfolio to what it’s always being as, stagnated growth isn’t really growth. Bitcoin might increase in value as a result of you having to hold what you’ve got but then, you would get even more should you continue to buy.

DCA method to Bitcoin investment is always advices because it in a way ensures you keep buying. It’s more like you having to set aside a portion of your income for Bitcoin investment and it disciplines you to keep at it rather than, wait on a certain price or a lump sum.

There is nothing wrong in buying a big chunk all at once, the reason why dca is recommended is for people who do not have so much funds, but they want to grow a portfolio, and also for people who want to reduce the risk of volatility. BTC is not like the many shitcoin cryptocurrencies that are created on a daily, so you can buy it in anyway you wish, just store it safely and don't be a weak hand.

And it all depends on which one suits you and you have sufficient understanding and knowledge in choosing the best investment strategy for you and you also master it, besides it must be in accordance with the income that can support your choice without harming or complicating you. And in general DCA is the choice of most people in various circles, especially for those who do not have the ability to buy Bitcoin in large quantities, with DCA they can make purchases periodically according to their abilities with weekly or monthly routines that will later accumulate and will grow bigger in the long term. And there are also those who buy in very large quantities and store them for a long period of time and whatever the method if the goal is for the long term is the best choice for Bitcoin which will generate profits.

The way i believe DCA should work is to be for persons who cannot afford to buy a whole Bitcoin. Any interested individual who can afford to buy a whole bitcoin should not bother to DCA if he really wants to be on the train faster. My suggestion doesn't mean that the DCA method is not a general one. Of course, any category of individual can choose to DCA. Sometimes people will prefer a strategy that will reduce risk even if they have more than enough to invest at once. 

It's broken thinking and belief.

Nothing includes Bitcoin is a safe digital asset because a reason like "great demand by people". You can have altcoins include a Bitcoin fork in 2017, Bitcoin Cash, that is a shitcoin, but used to have great demand by people who believed wrongly that Bitcoin Cash is real Bitcoin. There are other altcoins and meme tokens that can have great demands by people, but they are not Safe Digital Assets.

Bitcoin is a strongest and safest cryptocurrency because of many technical factors, not by community demand. Decentralization, censorship resistance, and network security are biggest contributors for Bitcoin success.

Altcoins can not compare with Bitcoin in network security.
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