Gresham’s Law states that “bad money drives out good.” Look it up.
Discussion
All of the money you keep in USD is still depreciating every second until you spend it. You're still spending it at the end, but if you keep it in bitcoin it doesn't depreciate.
I don't think that's how it works, but do your own thing. As long as you have Bitcoin exposure, I think you'll be well off. The rest is minuscule in effect.