Oh really? Do share with us what is not black and white about the Church’s moral doctrine on sexuality, which includes (but is not limited to) homosexual behavior.
The Franciscan Brother trained in theology beyond what the typical lay person receives has responded to the question of binding moral law, on many threads. Moral law in the Church does not change. Sometimes the explanation of that moral law changes, but not the Truth of it, nor the permanence of it. The Church’s integrated doctrine on human sexuality is based on a combination of revelation (Scriptural), Sacred Tradition, and natural law. There’s no “change” within the calculus of that.
The OP asked a question. The question was centered on
the teaching. **(See thread title) ** The matter of individual conformity to the teaching – difficulty with that, struggle with that – is what is not a black-and-white issue, for (I presume) any of us, including for many saints.
Struggle and difficulty never modify or “change” moral doctrine. Not in the Roman Church, anyway. But there are many non-Catholic faith traditions whose doctrine changes depending on popular opinion, “scientific research,” and other variables. Truth, by definition, does not vary. That’s what’s different about Catholicism vs. many other religions. The premises of what can and cannot change are fundamentally different from what operates in those religions and also from what occurs in secular society.
Regarding your other point, I’m glad that you correctly understand that Jesus will not leave any of us in distress, as long as we do our best to follow His commandments honestly and sincerely.