Comraderie at the field, watching a really good pilot punch holes in the sky, the sights of the planes, the smell of the nitro, fixing a mess, all the learning that is involved (from building to flying) . It's also a clean hobby! Other than NITRO I really can't explain it. just completely hooked!! I guess knowing that you and you alone are in control. Just fasinates me to no end. I think just about everyone has a love affair with flying, be it RC or full scale. I tend to do alot of things that make people wonder why I would love doing something like that so much. It leads back to the good ole cliche' "For those that understand, no explanation is needed, for those that don't understand, no explanation is possible".
My wife is slowly coming around to understanding it, well at least she has given up on trying to convince me otherwise