I like the post another member posted a few weeks ago...
'Because I don't want to spend more than a buck in ammo to kill a bad guy'
Or something to that effect...
I think it's cost really. I don't have one, but I am getting a 9mm barrel for my .40 so my 13 year old daughter can plink with it. I reload my own .40's which is probably cheaper than 9's anyway. Maybe if I got a lighter spring I could load soft .40's and not even need a 9 barrel.....
But it must be cost. I know why I have a .40. It holds more shells than a .45, is easily changed to a 9 or 357, and many loads have more power than a .45. What's not to love? The recoil is almost nothing and it's easy for a full sized man to shoot. It may be a bit heavy for women, I don't know as my wife and daughters have not tried it yet.
In the end, yes a 10mm is bigger, but holds fewer rounds and isn't as versatile for swapping calibers. 9mm is cheaper, but I think they are underpowered especially when you think you may have to shoot through windshields, walls, cabinets, storefronts, car doors or whatever.
But hey, this is my opinion and I know I'm wrong, so please don't waste the pixels pointing that out to me.
