I think that a lot more people liked the prequels than people now want to admit to. People went to see them multiple times in theaters and they made some serious cash for Lucas. They were much more lucrative in the long run than the originals were.
Add on the home video sales and Lucas made a killing in terms of these being financially sucessful. And these films do what popcorn films are supposed to do they entertained people for a couple hours in their boringly dismal lives.
I have known kids who love these films. They were made for a different generation. Lucas knows his audience.
Adults in their 30's and 40's or even 20's are not going to enjoy films made for 9-12 year olds and 13 year olds for sith.
At the end of the day i think it is okay the new films were not made for me. I am an adult. The wrong such audience for childrens films.
I already know someone will come on and say the originals were for all ages. Well at least star wars and empire strikes back were. JEDI started the kiddie stuff with teddy bears beating the empire and celebrating as harrison said a teddybear picnic.
Really not all that suprising though even all the sequels to raiders of the lost ark got increasingly childish until the fourth film there is no peril and its like a warner bros Looney Tunes cartoon.