Rinslin Merwind
Erudite
1) Guns are worth of money on black market and not all vampires can afford to throw away free money.You do need to be stupid as hell (or compensating for something) if you can kill people by pointing your finger at them yet you're obsessed with making sure you don't lose your precious gun.
2) Not all vampires powerful enough to kill shitload people by pointing finger at them
3) Guns can save vampiric ass in places where their powers refuse to work for some reason.
4) Not all vampires are stupid enough to risking their masquerade for sake of looking badass. Guns are less suspicious solution than magic and they can be buffed.
5) You need to keep your gun with you, just as any other sane person after killing someone because you risking being tracked by police and breaking masqurade.