Perhaps this is why Lucas Phoned In Episodes 1,2, and 3

When you're this passionate about something, it's hard to focus on what others want from you. I'm only assuming this because George Lucas stated that Red Tails took him twenty years to work on and it can only be the reaso why he placed the Star Wars prequels on the back-burner.
Who can blame him? From what I've heard, he's advised Simon Pegg to keep himself away from a franchise that he'll have to work on for the rest of his life.
By the way, I don't actually hate the Star Wars prequels, but I thought I'd try to figure out why everybody claims George Lucas is ruining their childhood.