>>64488600
>People buy 9mm mostly because it's cheap and common, and 9mm is cheap and common mostly because people buy it.
lol no, people buy it because it's good, that's what got the ball rolling and keeps it rolling.
>That has nothing to do with it being "optimal"
lol anon you've got this backwards, 9mm is the best and awesome precisely because it's NOT "optimal" in the way spreadsheet minmax fags do for everything nowadays. It has one of the biggest low-to-high envelopes of any cartridge. Bullets 50gr to 180gr, standard pressure is 35k but you can do stuff way less or push it over 42k, it has ample case capacity to be flexible for whatever, you can make rounds to shoot out an ultra compact 2" barrel or get used in an 8" barrel smg. The majority of people can handle the recoil no problem, it even suppresses quite well unlike rounds like 45acp. And it'll do to defend you from bears or man.

Nothing wrong with some people needing less (380 is fine) or enjoying more, but 9mm is flexible enough to cover basically everyone and do everything the super majority would ever want out of a handgun round. 9mm is fucking awesome and I'm tired of pretending otherwise.