My mother's family is comprised of extremely religious German Pentecostals, so they were very strict about "moral topics" such as sex, gender, family life, etcetera. My mom pressures my dad about religion sometimes, too, so he often defers to her in terms of "morality training." My parents never taught me anything about sex (nowadays they claim it was because "I had an older sister," but considering my sister still knows nothing about sex, fat lot of good that did me), and to an extent, I think that aided in the sexual abuse I endured as a child. I'm not blaming my parents, I'm just saying that their religious/moral convictions prevented them from being open with me at a time when I needed a running dialogue about the changes my body was undergoing. (I got my period way earlier than most of the girls in my grade, although I didn't develop physically until much later.)
My mother still is a very conservative woman, but as I've opened up a little more to her about my sexuality, and has she's grown to respect the fact that her children are not living in The Old Country in the 30s, she's loosened up a little. She still wishes I'd have gotten a simple job, stayed a virgin for a nice husband, and raised a gaggle of uber-Christian children, but more than anything, she wants what's best for me.
I am a devout Quaker whose many friends tend to be atheists, agnostics, Buddhists, and non-denominational Christians with big hearts and ready minds, so I definitely think that my current religion has improved my sexual health and influenced me to become a better person. For example, the Society of Friends is big on charity, including the sharing of knowledge, and I've made it my personal duty to make sure people don't continue to spout misguided sexual information.