I was raised by a man who likes big bores, and he always brought more than enough gun to get the job done in the field. Consequently, I would have spent my life swearing up and down that a 223 is just barely enough to down a whitetail, and it would be irresponsible to shoot it anything bigger or tougher.
But this thread and a few others like it have changed my thinking.
Now, I'm still gonna shoot my 45-70 at bears, my 7mm Rem Mag at elk, and my .357 at pigs and deer. I'm not gonna be one of those weirdos who shoots everything with a 22 caliber bullet. . . but at least I won't tell them they're wrong anymore