He won the lottery. He didn't develop something meaningful. That must be rough. Imagine if you hacked together a "hello world" program, and it made you a millionaire. Wouldn't that kinda suck?
Even so, there's a point of fame/money/success beyond which most people are uncomfortable.
Look at lottery winners. I would certainly not want to win the lottery, because most winners end up having a terrible life.
Also, lots of people enjoy shooting things, but being the inventor of the gun must have been a pretty heavy burden. Just because something is enjoyable, doesn't necessarily mean it's "good" overall...
Intentionally or not, he made something that most millions of people enjoy, to me that seems to be a pretty good accomplishment.