Sorry but you put zero thought in your post and it sounds like it was written by a first grader who didn't get what they wanted at the store.

Go watch ballistics tests over and over, especially with Federals HST loading. Does 45 expand wider than 40? Well yeah. Does 40 expand wider than 9? Well yeah. But the difference in expansion and penetration is so minimal that the benefits of carrying less ammo or a larger firearm negate the benefits of 40 and 45. That and the softer recoil allows ANY shooter, even experienced, faster follow up shots.

I own firearms in 9, 40, and 45 and see the benefits of all but I still choose 9mm to carry. Federal HST is the equalizer when it comes to hollow points