I just disregard them. I'll watch my extremely trimmed down and edited version of TPM from time to time, because for all its flaws, it still felt like a Star Wars movie, and back when it came out, the prequels still had the potential to be something really cool. I really couldn't ever watch AOTC again, even if I were to consider it only a side story. To me it is as unwatchable as any movie with Jim Carrey in it (and I do not watch Jim Carrey films, because they make me want to puncture my jugular with whatever is handy). ROTS is depressing to watch, because there was so much potential there that was wasted. Should have been awesome, but it was so over the top ridiculous in all regards. So yeah, AOTC makes me suicidal and ROTS depresses me ;) So I try to stay as far away from them as possible.