Sniping in video games is basically my favorite of all activities in life. It's incredibly fulfilling on many levels. It's incredibly fun to crouch far away, watching your enemies mull about, not realizing what's coming. Then you get your gun out, zoom in on the unsuspecting marks and decide which one to send to digital hell first.
Popping the first one, watching the pretend blood spurt out of the neck to make a mini-geyser where the head used to be, is phenomenal. Then seeing everyone freak out and scurry, and then raining death upon them as well, is sublime.