like how you changed your signature to making an exception for SDC hahaha i saw that the other day and was going to comment on it saying you should change that now your in SDC.
I think if BTC fails, it will be because the big. lethargic and intractable community can't decide on how to move forward.
I believe if BTC fails it's going to be due to mining problems. As a miner I can tell you, it is barely worth it even under ideal circumstances now, the tech is not going to catch up to the next halving just due to the reality of Maxwell's equations and the fees are not going to take up the slack. Unless the price rises above $1K (and why would it?) there's not going to be any reason to hash beyond an opportunity to screw the blockchain, which is an act that would make the coin worthless. This makes it totally unknown economic territory, and a failure of BTC is going to take down many altcoins with it.
That's why it would be really nice if Shadow was its own "thing" at that point, that people who don't even own any BTC are accustomed to using.