Venus Fly Traps: I hate the green ones. So....boring.
Sarracenia: I don't like any of the hybrids. I prefer the pure species like Minor, Flava, etc.
Darlingtonia: It produces such a complex trap yet still never managed to produce enzymes (this fact annoys me). I also hate how difficult they are and have given up on them
Nepenthes: I hate all the hybrids except for Ventrata (I have sentimental value for that one).
Drosera: I hate almost all the pygmies, the tuber ones, and the ones that form winter buds.
Pinguicula: not a fan of the northern pings. Also, some of the Mexican hybrids look too identical.
Utriculara: I don't like any of the terrestrial ones except for the ones with cool leaves (ex: Calcifida)