The reasons why I went to see the 3rd film were simple:
1) I enjoyed the first 2 films
2) The preview looked interesting
3) I don't always agree with critics' reviews and like to make my own mind up for myself.
I went with high hopes but came our sadly disappointed - the CGI President was totally unconvincing, Shia did spend a lot of the film just screaming and RHW seemed to be acting as though she'd picked up a token bit of rough!
Incidentally, Jock, did we really need to know you had a "semi on" for the duration of the film? Eeeww!"