Besides,how many people do you know who will say,"Yeah,I've been friends with that phychotic baby-murdering SOB for 20 years now. Nice guy!"?
There are risks regardless of what we do. Staying at home under the bed does not keep one safe from the ceiling falling in unexpectedly. However, some risks are just plain reckless. Here in Oklahoma, there is a saying: if you lie down with dogs, you get fleas. Essentially, if you hang out with lowlifes, you get lowlife kinds of problems. Do lowlifes sometimes masquerade as pious churchgoers? Of course. But your chances of finding a lowlife are really much higher if you go go places where lowlifes go. Bringing said lowlifes home is, to me at least, an uncceptable risk. It goes far beyond bringing a churchmember home for dinner--the expectation there is that this is a decent Christian person. The expectation with a barfly is considerably lower.