The biggest problem with Bitcoin (as a "brand") are the forks and the manipulation. If there was no Bitcoin Jesus and no forks, Bitcoin would be a million dollar already.
I don't have any type of bitcoin because of this. I trust ETH 1000x more than Bitcoin.
You never know if you have 1 BTC worth 10k$ today if that is going to be there tomorrow because of some self-proclaimed bitcoin Jesus has the power to change the name of sh#$ty fork called BTG, BCH, BTX, BT? to BTC with his influence. Besides that, with his tricks in the past causing BTC transactions to crash, no one want to take a risk to keep BTC. Transactions can be slow (56 hours) and expensive (35$ and are vulnerable to ddos attacks). For new people these kind of numbers and risk factors scare them of.
In my opinion the only valuable bitcoins are the are ones that have not been forked yet. Once they get sold their value is gone.
If all exchanges just ditch all forks and they get de-listed everywhere, we will have the mother of all coins again. until then I prefer to stick with ETH or even Doge.