(2) Married clergy doesn't stop clergy sex abuse (cf. Anglican/Episcopalians.)
(3) Historically, and for very sound reasons, esteem for marriage and for celibacy advance each other. When they rise, they rise in tandem; when they fall, they fall in tandem. When people respect and honor vows made in the sight of God and all, they live honorably as holy married people or as holy consecrated virgins. If they come to reject vows and reject God Himself, the can't live honorably, period. No honor at all.
When I was a kid, the priest and nuns did sleep under the same roof. The church itself was located about a block from where I lived. Father Volk lived about two blocks from there in a very large home, where for fact when nuns came they did reside there.
I recall Father Volk quite well, as he drove a Volkswagen. People would see him driving around, and jokingly would say: “There goes Father Volk in his wagon”. He was easy to like and respect, as he liked and respected all, Catholic or not.
I was raised a Lutheran and those of that church were the most hateful bunch of hypocrites imaginable at the time. This turned me from religion for decades until I adopted the belief that one can believe without actually going to a church.