I disagree Tyndmyr. I will admit that for US an unearthed arcana style book might be better. But the biggest benefit of Pathfinder is that it allows new players to enter what is essentially the 3.5 market, since actual 3.5 books aren't being published or promoted. It keeps games in what is predominantly a 3.5 format in cons and gaming stores. It keeps D&D alive. (I personally do not regard 4.0 as D&D, or groups playing it as sharing my hobby).

For that, despite its many problems, I have to be a PF fan.