Who knows, you might have one in your computer in a decade or two.
If you're contemplating this issue seriously, know that not doing anything isn't an option for more than a few months, max.
Ask HN: What would you spend your time working on if you didn't need money? https://news.ycombinator.com/item?id=40500429
Build a monument of brutalism unlike anything this world has yet seen (and I’m well aware of what that covers.)
I'd not sweat it if things slipped. shrug
The work is interesting enough for now.