I disagree, I think George Lucas really does care a lot about Star Wars. I don't think he's so cynical to only care about money, I just think his tastes have aged poorly. Lucas is like that guy that gets a laugh for a joke and then keeps telling that same joke over and over and over again. He is a bit of a one trick pony, but I do think he cares deeply for the legacy of Star Wars, how could he not? My guess is that he knows he's getting too old carry-on Star Wars probably doesn't have any family that are interested in doing it and realizes he can make a boatload of money and keep the legacy of his creation alive for many years to come. I'm also going to go out on a limb and suggest that perhaps Disney will do some great stuff with the franchise. It really could not be any worse. It all depends on how much control they want to have over the films. If they hire a very capable director and let him have carte blanche it could be a fantastic new chapter.

I'll admit that about 90% of what I just wrote is conjecture and me playing devils advocate