Right now, I'm running 50+ miles a week training for a marathon. That is really hard and a major commitment. I won't set any records, but I have a good shot at placing in my age group. I don't run to win anything or achieve a certain place, but I would be somewhat pissed off if some idiot like this cheated and beat me.
I enjoy most of the time that I spend running, but to get to this level, you have to go through a pretty difficult level of training which makes all of your life a lot more stressful during the periods of intense training. Right now, I'm staying in a job that I don't like because the schedule is very flexible and allows me to spend around 15 hours a week training.