Marduk is right when he mentioned a time when something you invested in and nurtured becomes intolerable. Unfortunately the Peter Principle is real and it can often create poison. Alas, in the end, it is usually beyond our control when the principle trumps dedication and accomplishment. You must eventually choose the path that leads you away from the ever maddening frustration. You chose well. Difficult...but well.
Take heart in the fact that for years you have coworkers, people you helped, and others in the community who appreciate very much the hard work and dedication. Don't let a lone idiot make you dance. Dance because you want to. We're all the better for it.
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...got YAK???