We totally agree on this.
I feel the same way as I hate letting other people do any work on my stuff. My Dad decided to do the same thing last year and painted his Mustang, I would've painted something I cared less about before i painted a nice 68 Mustang, but the spots that didn't turn out right he'll sand off and paint again. Overall its turning out pretty decent.
I do know that quality guns go a long way, good regulators, plenty of air supply, and ventilation with good filtering is very important as well.