.38 S&W was once a very popular round, adopted by a lot of police forces & was THE round for British Commonwealth countries for 40+ years, you tried shopping for those lately?
Time marches on, things change, what is, becomes what was.
I've got a single .40 in my collection, a surplus G22 I bought from a coworker/new dad that needed diaper money. I've got maybe 400 rounds of .40 left. I'm usually opposed to selling guns, but have thought about letting it go. I'll probably just give my ammo to my LEO, BIL (their department still uses .40 for service weapons) and stick a 9mm conversion barrel in the G22.