Ron Paul said in like 2009 "the dollar is done" then something like "what will replace it?" and that is the question. I originally thought Bitcoin could replace the dollar after seeing the whitepaper. Now I think if the dollar is abandoned in the next few years I doubt Bitcoin can replace it. Bitcoin is great for intermittent, substantial, long-distance, cross-jurisdiction, low-speed, online payments. As long as it is useful it will be valuable and I'll keep using it. I don't want custodial stuff. The original sin of money today is rooted in custody. If gold was hijacked by custodial solutions, why wouldn't Bitcoin be hijacked by custodial solutions? Anyway, yeah, Bitcoin could still potentially replace the dollar, but I think when the dollar collapses, I doubt Bitcoin is the replacement unless some major breakthrough happens. Some altcoins might rise to meet the challenge, likely altcoins that actually aim at the becoming that replacement. I think the most likely scenario is a handful of market monies competing with whatever the authorities propose.