I'm convinced that the only people who are long-term bullish on BTC (and all other PoW e.g. LTC) are fools who don't understand how it really works. The more you understand the protocol, the more you understand how broken the proof of work system really is.
A crypto is supposed to be decentralised and is supposed to have no central trusted authority. But the truth is that the central authority is just the biggest mining pool or two, and all the power is ultimately held by ASIC manufacturers. Even if you start a smaller mining operation to reduce the power of the biggest pools, there is nothing in the protocol stopping the biggest pools from ignoring the blocks you mine, removing your ability to get your block in the chain even if you mined it first.