Episode 1 is a film aimed at kids, so of course when those kids become adults, they'll think "it's not so bad". As a family film, it's a pile of crap and too focused on kids and selling merchandise.
Episode 3 is alright, I guess. The fact that everything wraps up and that some of the scenes are very good, and all the actual story stuff somewhat wraps up, it does help the film a lot.
Episode 2 is a pile of shit apart from maybe the big battle at the end.