Ideal Weapon
I love the shotgun. Specifically, I love pump shotguns and even more specifically, I love my Mossberg 500, my Remington 870 Express and my Mossberg 590, in that order. Shotguns are powerful, take a huge amount of abuse, are very simple in function and to clean and multiply force exponentially. They are fairly inexpensive compared to most handguns and give one longer, wider reach, too.
Someone posted earlier how a 9mm slug is one tiny projectile while one 12 gauge load of 00 buck, say 9 or 12 pellets, is like firing that many shots at once. I can crank out a ridiculous amount of rounds with any of these three shottys and make a paper target look like a perforated rag in seconds. The real world equivalent is that the meth addled home intruder is bleeding all over the place, multiple wounds, mucho trauma. I can buttstroke with them, I can smash doors and windows with them. I can mix 00 buck, rifled slugs and whatever insane, exotic rounds I might want in the mag tube of my 590 and blast the crap out of just about anything.
I spend a lot of time at the Shotgun World tactical shotgun forums. Give them a look and ask the same question:
http://www.shotgunworld.com/bbs/viewforum.php?f=7&sid=3ad80ce1c857b66f23ec8576dfab8c1e
A final thought. In the dark, just woken from a sound sleep, the horrific sounds of someone breaking into your home...greet them with a couple jacketed 9mm rounds, shooting groggily in the dark, or an eruption of steel shot like a net around them? I'll take the big metal fist!