Some people can be secure and happy with their chosen way of life without having to mock or belittle others for theirs. I hope God will guide you to Islam too.
Digging into Sinead's background was an interesting exercise. I didn't intend to mock you GS, but I genuinely think that a religion that is highly prescriptive will be naturally attractive to someone who wishes to unify their fragmentary self into a clearer identity.
I found an interview with her very enlightening. There are a good many people who are now Muslims who have been brought up in Catholicism.
SPIN: How much influence has growing up Catholic had on you?
O’Connor: It was never a really large part of my life. I always believed in God and the Virgin Mary and the immaculate conception and I love those things. So I just took from Catholicism what I loved about it, which was the image of her and all those sorts of stories. But I didn’t feel that it f–ked me up at all, I didn’t really take it that seriously. I just took from it what I liked and what made sense to me and what appealed to me. I would have had the beliefs that I have anyway.
SPIN: Do you believe in heaven and hell?
O’Connor: No, I don’t believe in heaven or hell. I don’t believe in any sort of burning. I don’t believe it’s right to teach children that God is somebody that will punish them if they misbehave, that God isn’t somebody who understands. That’s an abuse of children.
SPIN: Do you believe in heaven?
O’Connor: I believe in different levels of spiritual attainment and the highest level is something that somebody like Christ achieved. The highest level of spiritual attainment is the closest thing to heaven. But I don’t believe in heaven and hell as they’re depicted.
SPIN: You grew up in Ireland, surrounded by all this Catholic mythology.
O’Connor: I can sift off the bulls–t because there’s what’s called the church triumphant and the church militant. The church triumphant is basically God and the saints and everybody else, the church militant is the church on earth which I have no respect for.
SPIN: When you were growing up you were surrounded by great pain. Did you think that God had deserted you?
O’Connor: No, I believed in God very much. I didn’t believe there was anything to punish me or I didn’t believe I had been deserted. I always believed and prayed all the time and took great comfort particularly from the mother of God.
https://www.spin.com/featured/sinead-oconnor-interview-spin-30-cover-story/