With the exception of one .380 as a backup, I have carried the 9mm exclusively for self defense for over six years.
As I get older, I have realized that stuff that is sitting around collecting dust is just clutter. But, you don't have to go all-or-nothing in getting rid of stuff. If you have 5 10mm guns and thousands of rounds of ammo, you could hold back the one you like(d) the most and a few hundred rounds of ammo and sell the rest.
