No I don't mean "aspergers" I meant Autism. I'm quite familiar with "aspergers" and "aspergers" sufferers. And I'm not going to get in a hairsplitting contest over what constitutes "aspergers" syndrome and what constitutes "autism". It's a difference without a distinction IMNSHO. Those links are just a series of words strung together that have as much to do with Aspergers as a picture of a trainwreck has to do with actually being pinned down in the middle of one and watching as the fire creeps ever closer to you.
However on a different note I don't see ANY REASON AT ALL why there can't be a genetic basis for most mental disease. We are standing at the base NOT the summit of research on DNA and that other greatly ignored biomolecule RNA. We are utterly clueless as to what sharks, mermaids, whales, and jelly fish that are out there swimming in that gigantic genetic ocean.
However since we're apparently talking past each other on this point. I'll just close and say that I agree with you completely I think evidence is suppressed.