Is it that much worse than the Sims, for example, though?
Albeit I remember some group or other whining about that because it allowed homosexual relationships, adoption, etc.
What i mean is, how many 'innocent' youths are going to be exposed to this (especially given the ratings protection and the obscurity of the code - and the need to explicitly activate it)? And how many are actually going to be 'corrupted' by it? Reportedly it's basically a dry humping minigame in the PS2 form; we're not talking pixellated CJ does Dallas here.
Granted, we're dealing with the sort of people who go white and faint at the sight of a single tit (and i don't even mean Jack Thompson); begging the question what they feed their babies with? Which leads me to decide the reason they're offended is because they don't actually know what sex is; it would explain why they seem to want to mother every other persons children, like a bloated Godzilla sized Patty & Selma.