A question for /metal/: Is there a band you disliked that you got to see live, and it only proved your bias/made you hate them more?

For me it's Cattle Decapitation. Never cared for them but I went to seem them with a friend, hoping it might change my opinion.
They were fucking terrible. Boring songs with shitty stop-start structures, barely audible 'riffs', and the vocalist was this massive primadonna bitch who kept complaining that we weren't moshing enough. Even ended their lame set saying he didn't want to come back. 200 Stab Wounds was supporting, and even their milquetoast DM was far more enjoyable than that travesty