Crankin there are two forms of "I never want to do that again", I think. There is the form you experience when your body is not prepared but you do some form of exercise and you spend days recovering from it and the thought of doing it again causes revulsion. That's the one I seek to avoid. Then there is the "cannot wait to get off of this bike feeling" I had when I came home against the wind (bad planning) for a 42 mile ride, the longest I have done in a while. And yes, that one is all about bragging rights, knowing you pushed yourself a little or a lot and that you can keep "going further".

I remember vividly thinking during labor with my son, "How could I have been talked in to doing this?" and then hours later, looking at him bundled up in his crib thinking, "I can't wait to do that again!" and just laughing at myself because of the 180 degree turn in thinking.