Raiden was not that bad. I actually found his exploits more interesting when he was human as he was more vulnerable. The killer cyborg thing doesn't really do anything for me. The only cyborg characters I ever liked were Robocop and Angel Cop (Raiden from Angel Cop was ok too.)
Carl Kolchak: You should meet my boss. He'd turn Buddha into a chain smoker.
People hated him because Kojima danm near pulled a DmC with MGS2. I have always like him though maybe even more then Snake. I just like to play the badass in games and when you saw Raiden's fmv's in MGS4 who didn't want that. Also I have always wanted to use the HF Blade in MGS games for a whole play through. Idk why Konami never added a HF Blade only play through mode to the HD Collection it would have been a good idea.