Why Do So Many Phillies Fans Hate Pat Burrell?

I'm not happy the Phillies lost to the Giants, but I have no real issue with the Giants. I'm not happy to have watched Pat Burrell play well against us, but I still like Pat Burrell a little bit, I mean the guy had THE big hit in the 2008 World Series (his hit lead to the series winning run). Lots of other people aren't so positive, and some Phillies fans are pointing out that Burrell has two World Series rings and one World Series hit. While I understand the pain of losing this year, let's not forget what a big piece of the 2008 puzzle Pat was guys.