Personally, I think the genetics siren call is the ultimate cop out. How did the genetics change so significantly in a 1-2 generations? Perhaps there is a genetic component but it's not just genetics otherwise this wouldn't be a such a recent phenomenon - something must have altered the "genetics". Certainly it appears to run in families but nobody in my family has anything similar. Glad to see you are at least clarifying between a retrovirus and a virus now.