Things that make you know you're doing something right.

[ZenGum]

There's an ethical dilemma for you. I am a (non-strict) vegetarian, but I kill mosquitoes. I figure self defence counts.

In highschool, one lunchtime a bunch of us were sitting on the lawn, and we noticed a spider and started looking at it. one bratty lad leaped into the circle and stomped on it.
Cue a ten-person beatdown. Not enough to do him actual injury, but plenty enough to express strong social disapproval for this act. It was so crowded it was all I could do to land a few punches on his back.