I absolutely keep a retirement account. It scares the hell out of me when you hear facts like 60% of American's don't even have $1000 saved, much less a retirement account.
I applaud your thoroughness. You may want to look into never getting married. If it went tits up that may throw a giant spanner in your plans.
Marriage and kids my fucking ass. When I'm done it's the end of my line and I am OK with that. Going to leave whatever is left to a drug treatment center or an animal rescue, depending on my mood when I write my will.
Yes I have a retirement account that does not include bitcoin. It's stocks and they happen to be denominated in dollars but you could price them just as easily in bitcoin.