Bingowings said:
it's not the existence of an EU that's the problem, it's which direction it points.
Does it truly 'expand' the universe or does it contract it.
In that regard ROTJ and the PT are more of a problem than most of the EU.
That's it in a nutshell. Star Wars inhabits an endless universe. Some writers have a much better grasp of it than others. Oddly enough, Lucas has one of the weakest understandings of what made it connect with people's imaginations in 1977 - if he even understands it at all. In my opinion, by the way, he does not.