Thing is i do notice fear among users here about any coin that may 'unseat' bitcoin. Yet the endless scaling debate went on for so long, while us users of the currency, the 99% not using forums mostly found transactions getting slower and slower, fees going up and up, all the while the endless debate and deadlock, hence BCH was born.

There have been years in which to solve this problem, or implement some breathing space. SegWit was one example of breathing space that we finally got, but 1MB block sizes simply will not do it, the transaction volume it can process is too small. Unless you wished to keep bitcoin as a 'store' of value, in which case an altcoin like BCH or Litecoin will take over for day to day currency use. I Want to be able to transact with my clients without endless high fees and slow confirmations, and Bitcoin simply does not fit that bill anymore but it can be used to store 'savings' for example. I won't pay a $10 TX fee if PayPal can do it for 50p, or Litecoin can do it for 0.01p.

Bitcoin is awesome, but it will be limited as a digital 'store' of value unless it scales, simple fact.

Centralization is also a big problem, the ASIC arms race and the sheer waste of power, will probably see some hybrid consensus system in the future, POW is simply too energy intense, the power grids of many countries will not handle it, and many hot climates the overheads of running a farm due to cooling issues and more expensive power is concentrating the mining power. Proof of stake will mean only those who are rich get richer, a hybrid system like proof of importance works better as a consensus mechanism in my opinion.

All those gigawatts of power as manufacturers will keep trying to make better ASICs to knock over others to 'stay in the game' and get more profit than those using older ASICs for a while until they upgrade, rinse, wash, repeat until we hit the end of the silicon road then it changes a bit

Because bitcoin is most famous and most trusted digital currency than bitcoin cash. Bitcoin was already build a deep relationship among the people that it already faced many challenges and controversies then survived in which many people gain their trust to invest their money in bitcoin. In fact, ethereum is most potential than bitcoin cash.

BCH will never be a king because it just came from Bitcoin and as other people says BCH is just supported by it's fans and they are just consist of several group of people with a primary goal of getting more money from new investors in crypto currency. I think this people are just envious from the people who got into bitcoin first and wants to do the same in the expense of other people.

People are already skeptical on investing in Bitcoin how much more on investing into something that is younger than Bitcoin with not that much credibility?

Wow man, you sure know your technical stuff. 

Even if they have the knowledge about cryptocurrencies. They will choose to invest in BTC. Because it's the main cryptocurrency and trusted by many investors.

First things first, Bitcoin cash is a scam coin. Everybody knows that since the moment it was created after forking Bitcoin it was pumped and then dumped hard. While it is normal for a coin to pump and dump at the beginning of its launch BCH was pumped more than one time.
It was also used as a weapon against Bitcoin to manipulate its price, which effected the mid level traders very much because of its hard dump.
How can such a coin become a king when BTC is here.

Agree, Bitcoin and its community are ideologically committed to supporting something close to its original design. Bitcoin is the root of the digital currency, it's kinda hard to see a technology who started the digital currency revolution to be replaced or abandoned. even though there is an attempt to replace it, the early investor is kept loyal to bitcoin. The problem is a people that are new to a cryptocurrencies scene, they didn't know well everything so they get easily FUD and wondering which is the real bitcoin. that's is why any bitcoin fork is kept sustainable until now and the greedy miners, they only think about profit so, in my opinion, bitcoin is flawed since bitcoin cash created it allows miners to flip-flop between any coin so it detains the bitcoin development.

It is simply because none of this alts were able to provide a good reason for them to replace bitcoin in the market also people were able to put their trust over bitcoin and that's difficult to replace. As long as the demand and market of bitcoin continue to succeed people will go over bitcoin and will remain loyal to this currency other will just be an option for a short term investment with a little percentage of income were used

that is the same with Bitcoin