Why is there always one jerk in the group ride, and why is he always behind me?

[zoom-zoom]

I don't know why but I encounter very few rude mtb'ers. I guess it's a different culture altogether and with everyone battling it out on the trails and with Mother Nature perhaps it humbles one even more.

This parallels road/trail running. Trail runners are generally a really laid-back, friendly bunch. There are relatively more elitist arseholes in road running, IME.