Completely agree, but why would you want a 9mm as your sidearm while hunting, or if you had to use it to actually hunt with?
Well yeah, but it all just kinda depends on what YOUR "all-purpose" means:
-I am a hunter, so if I have NO rifle, then this one handgun, being all-purpose, has to be a hunter, too. That means a 4-4.5" revolver in .45 Colt. Also serves very well for other uses. But not everyone is a hunter.
-If one was not a hunter, OR if this hypothetical posited here does not necessary mean that you can't have a rifle, then the rifle keeps it's hunting duty, and a semi-auto round/gun makes a bit more sense to me personally, for CCW and the like. I'd pick 9x19mm in that scenario. But I ain't an urban-only guy, and I don't believe the OP clarified whether you can have longguns or not, along with this one-only handgun.