I realize I'm late to this, but I wanted to give it a shot anyway.
I don't think that there are any tropes that I outright
despise, but I would say that a trope that I'm not really a fan of is when most of the characters in a story happen to be jerks. I'm not really talking about
Grey and Gray Morality/
Black and Gray Morality/
Evil versus Evil, but more so just when a lot of the characters aren't exactly nice, to say the least. I'm not quite sure if that's necessarily any specific trope, but it probably is one on TV Tropes.
As for guilty pleasure tropes, I'd say
The Power of Friendship,
Evil is Hammy, and
Agent Peacock.
If we aren't dividing by two if ours is under 649, then I got Wailmer.
If we are, then I got Feraligatr.
I'm cool with both of those.