Everyone went to see it because it's titled "Harry Potter". This movie, just like most of the previous ones, cannot be compared with the depth and broadness of the books by JK Rowling.
The once young and cute actors grew into ugly and dumb adults. Their acting is bad. You can't feel anything from their faces or languages. And, if you are gonna take a shirt off in a commercial movie, please put on some muscles. If you don't work hard on acting, do some work-out at least.
I recommend everyone see it on a rent DVD, if you have to see it. Sound and visual in the theatre are not impressive at all - pointless to sit in a cinema then. If you say "well, it is the last two movies of HP anyways", you do realize there is gonna be a TV series sometime down the road, right?