I am not a nihilist myself in that I don't see life as pointless. Even if I did though, I do not desire to kill people - well, not many at least. Those bastards who come around my apartment with leaf blowers deserve death but that's a special case. Even then, I know there will likely be consequences to face if I kill them and I do value myself. The bottom line is there is no way I start going around killing people. Doing so is not in my best interest. Simple as that.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.
Albert Einstein
Albert Einstein