I don't really hate all
of /monster/, it's just certain parts of it that I take major issue with, the prominent overtone of pair-bonding predation being foremost among them. While the idea of a true waifu for laifu is certainly appealing, the likelihood that (assuming a "standard" DoTR scenario) I would end up with someone I hate for all eternity due to simple bad luck is nothing short of terrifying.
Also, I'd hesitate to call anything on /monster/ vanilla. In fact, I'd say it's fundamentally non-vanilla (not that this is always a problem, I just don't think it deserves the label).
There are a number of other, smaller things about /monster/ that rub me the wrong way, but I'd really rather not sit here and knitpick about a bunch of things that don't really matter.
I do go there every now and again for the occasional bits of content that I can enjoy, but as a whole I just don't like it that much.