Actually, no, it's not. At least, it's not for me. Several of the businesses I've built in the past are "lifestyle" businesses. They're supporting me, they're paying my way through school, but they're not as much fun as you'd think. That's why I'm here, after all :)
Ask anyone who owns a restaurant, and they'll tell you lifestyle businesses are a lot like working at a 9-5. Only that there's much more to do, and the income isn't guaranteed.