We're clearly using different definitions of what defines a moral issue, and I'm going to just leave it at that, since most debates on semantics are pointless.
Regarding choice, and the highlighted paragraph, I personally don't consider whether an action is a "choice" when I consider whether it's also "moral" or not. For example, I've read studies suggesting a link between genetic factors and tendencies toward violence. Even if murderers may have little 'choice' in their explosive dispositions, I still consider murder to be immoral. Likewise, many pedophiles have claimed they've had sexual attraction toward children since birth; i.e., it's not a choice. That may be true, but sexual conduct with a child should still remain a crime.
Regarding homosexuality, as I already discussed above, we as a society need not concern ourselves with whether it's "moral" or "immoral" - if it only involves consenting adults, the gov't and the law need not be involved, or need only be neutral in their treatment of it. To me, it's similar to divorce, which some religions prohibit, but the law does (and should) not. If Joe Citizen considers divorce immoral, Joe and Sally Citizen should stay married, but not prohibit John and Jane Doe from separating if they decide their marriage is not longer working. The Doe's divorce doesn't affect the Citizen's marriage at all.
