Introduction: Simply, because I've enjoyed a career where I've done huge, complicated projects on time and on budget, made a butt-load of money, and got great reviews --written and otherwise-- from folks who know how to evaluate professional performance, like engineers and architects.
Having enjoyed that success, I'm kinda like the Greyhound who managed to catch the mechanical rabbit. I've found my success to be very anticlimactic, and now I'm not so keen on being in a competitive racing environment, and instead prefer to spend my time around the farm, licking my balls, and giving a real rabbit a chase once in a while when the mood strikes me.