I frequently ignore the outcome of democratic votes/majority opinion. So it's really a case by case basis whether fiat currencies can be replaced: I've already replaced them as a store of value, and I didn't need a democratic vote to tell me to do it. But go ahead, have fun while other people vote on what you're permitted to do with your life.
Indeed. Despite how people behave after an election, participating in one means implicitly agreeing to be bound by the outcome, win or lose. People tend not to notice that democracy is coercive in nature until after their side loses an election. This is sometimes caricatured as "the tyranny of the majority", but in most actual cases it is the tyranny of some power group or other. Lots of disgruntled losers feel the bite after every election in any case. That is the antithesis of freedom, imho.
I stopped voting on any issues years ago, since the choice before me was usually a false dichotomy arranged by persons unknown, untrusted and untrustworthy - a classic pitfall of trust-based systems.
Unlike a previous poster, I do not think that the only way to take control (of one's own life) is to vote within a trust-based system and abide by the arbitrary outcome. Rather I see the only reasonable escape path from such systems is to stop participating in them - and of course to hope that trustless systems will arise to fill the vacuum.
Life goes on.