Currencies are meant for spending, money that's worth more tomorrow than today doesn't get spent, it gets hoarded by investors, it has a built in deflationary spiral. Bitcoin is a terrible currency. The ability for a fiat currency to be inflated is not a bug, it's a necessary feature. The supply of wealth to be traded in the world is not fixed, nor can the supply of the tool we use to exchange it be.

That bitcoins are divisible completely misses the point that prices go up faster than they go down, i.e. they are sticky, and deflation is painful and feeds back into itself leading to a recession. Divisibility is not the correct solution, inflation is the correction solution, i.e. add more money rather than expect all prices to go down to adjust to the supply of a fixed currency.