For me it would be about having a wide range of calibers to choose from, if it weren't for the cost of ammo. The guns are little problem, a one time purchase for years of service, but when I can pick up two or three completely different looking, feeling, and shooting guns of the same caliber, it just seems to make more sense, logically speaking. So I collect what looks good, and semi-automatics only, with exception of one lever action rifle. I've never held or shot a gun that felt wrong or uncomfortable, except for every single revolver I'e handled. They're big and ugly and poorly weighted and take forever to shoot... Truly the epitomization of self-defense suicide. So how do you collect? I could see addiding some rifles, some semi-autos, some revolvers, and within the first and last some black powders... But I'm just not that into it all. Maybe it's more of a brand thing for you, high end names to proclaim. Or collecting the "classics" or "iconics"... What drives your collection? Or maybe you don't consider yourself a collector. Perhaps you're a hobbyist.