My son was five when The Phantom Menace came out. I made sure he had the opportunity to see the OOT before that and he loved it. I had no reason to keep the prequels from him as we watched them together in the cinema, not knowing how good or bad they would be.

Despite being a prequel generation kid, he is now 17 and knows which Star Wars movies are good and which are not. I think the "no prequels in my house" stance is going too far with it. It's fair that you don't want to buy the prequels for your own collection, but you wouldn't say no if they specifically asked for a prequel movie for their birthday or something would you? :(

The only time they will enjoy JarJar Binks, robots who say "Roger, Roger" and possibly identify with crappy child actors is when they are children. You can't give it back later.