Who cares about lost coins? Infinitly divisible. If they're truly lost, yours just become worth more.
Discussion
It's more ocd than anything, only care a little. And I don't think it's infinitely divisible without a hard fork, but I get your point
No. Bitcoin has always been infinitly divisible and is already divided into millisats for lightning network fees.
Nothing smaller than 1 sat on chain. Didn't know millisats was a thing yet, had heard it was possible once and that it may involve probabilistic ownership or something like that.