I disagree completely. You are granting prematurely an unproven premiss; namely, that SSA is biological and not, e.g., strictly psychological (which is the opinion, e.g., of the Catechism). The latter, having to do with our thoughts, may or may not include moral culpability. We are not to entertain sinful thoughts. It per force leads to evil habits and vitiates our will power and character. It is degrading. To entertain the thought of homosexual activity is to entertain a crime. Moreover, an individual can victimize themselves and two individuals can voluntarily victimize each other: homosexuality is not a so-called “victimless crime”. Homosexuality is in the first instance a crime against one self and a crime against the sanctity or goodness of the human mind: well before it is acted upon with another it is inherently criminal insomuch as it is deeply and intriniscally lawless. It is a revolt against nature: not merely biologically but psychologically too: I mean the validty of the human mind, which is designed to seek out, contemplate and entertain the truth. Deliberately entertaining sinful thoughts -especially those so plainly contrary to nature and simple reason- will lead to spiritual blindness or darkness.