I think we're in agreement. Adultery and homosexuality are obviously undesirable socially, I just don't think that having laws (especially federal laws) against private vice is the right way to deal with them.
That being said, I often wonder why the "family values" crowd obsesses so much over homosexuality as the biggest threat to families, as opposed to divorce or adultery. Most families aren't being broken up because mom or dad decide to go gay (and in fact, there would be no such cases if there weren't a social pressure for homos to be closet cases). They break up because of no-fault divorce laws and a society that finds adultery acceptable (much more so than homosexuality)
I have long thought that no-fault divorce laws combined with "family law" (a cruel oxymoron) courts where a woman can leave her husband for any or no reason at all, get the kids and the house plus a large child support income tax free, and "uncle dad" gets to see the kids two weekends a month and one night a week at best. Authority to discipline goes to the mom, and if dad does something she doesn't like, Child Services is right there to track dad down and remedy it -- mom doesn't have to hire a lawyer.
On the other hand, if mom lets the kids flake out on visitation ("Johnny had other plans this weekend so he's not going to be spending it with you, sorry, I can't do anything about it") or if mom spends the child support money on stuff for herself, dad has to HIRE A LAWYER to fight it, and he's so broke from the child support payments he can't afford it.
How do I know this? I have lived it first hand and seen it in literally dozens and dozens of friends and relatives.
In my opinion, easy no-fault woman-favored divorce in the U.S. has contributed hugely to the rise in homosexuality in our culture.