One of my concerns about crypto currencies is parasite SJWs infecting the dev teams, driving out good developers and adding bugs. It always seems to start with changes to the code of conduct. Imagine if a 0-day exploit for Bitcoin was discovered and covertly exploited over a period of time. The thief could liquidate their stolen bitcoin / exchange it for other crypto currencies. Once discovered, it would cause loss of faith and could even be too late to fork the network.
Still, I own some bitcoin and several other crypto currencies. I mostly hold though and rarely spend.