If he doesn't have the same level of satisfaction, rest assured, he'll move on. If he's still enjoying it, let the man race. The guy's already among the greatest riders ever to throw a leg over a dirt bike. Maybe he just wants to be able to enjoy riding and racing without having to worry about the career aspect, and if that's the case, how can you blame him? I know I wouldn't get the same amount of enjoyment out of GNCC, endurocross, trials, etc. that I get out of motocross.
I was pretty big on bowling a couple years ago... used to bowl 3 nights a week, and back when I was serious about it, I was averaging 170-ish, but I never could get better than that, so I lost a lot of interest. I ended up going from bowling 3 nights a week and hitting up every tournament I could find a team to go with 2 years ago to only bowling 4 or 5 times this year. I really got burnt out on it.
This is my fifth year on a co Ed league with my wife and i average about a 205 and have had one 300. Highest series was a 772.
But I was raised in South east Kansas so it just comes natural. Lol