A simpler take on https://mindstalk.dreamwidth.org/511477.html

If everyone used Bitcoin, you could use it twice in your lifetime.

Global life expectancy is 70 years, which is around 2 billion seconds, which allows for 14 billion Bitcoin transactions, given a hard limit of 7 per second. There are 7 billion people, so in that 70 year span, two transactions per person.

Currency of the future, I tell ya...