You gotta get a 45. If if you don't know what it's good for, or how powerful it is or can be, you need it just for fun.
The first time you load it, those big cartridges look like artillery shells next to 9mm's or even 38's. They drop in with a satisfying "THUNK." When you eject the empties, they look like trash cans.
In between there is a BOOM, a muzzle rise (How much depends on the load) and a kick that isn't hard, but will let you know you shot something. Heads turn along the line. This doesn't sound like your average pistol.
I can't explain it, I know it's not bigger than a Model 28, but it looks bigger. It reminds me of Hellboy's pistol. I keep thinking "Now, THIS is a gun."