Wrong. That isn't all it does.
It teaches you that your sexuality exists simply to serve your need for selfish pleasure, apart from being any sort of gift to anyone else, most particularly to God or to your (future) spouse.
It's a wretched preparation for marriage, because it teaches "lessons" that simply need to be unlearned to be happy in marriage, and to make your spouse happy in marriage.
It is in these types of statements that the parallels between Christianity-in-practice and Marxism-in-practice stand out with stark clarity.
And I suppose eating all those McDonald's burgers when I was a kid kept me from appreciating fine cooking when I learned how to do it later on in life? My eyes are in my head to enable me to gather knowledge, but if I watch a re-run of "Gilligan's Island", I'm not detracting from that purpose, I'm just engaging in a little chewing gum for my brain.
Any part of our bodies can be used for good or evil purposes, this whole idea that "it all belongs to God", and then the appointment of human beings to decipher what all that means, is what bothers me most about religion.
Learning how to masturbate can get a woman in touch with her sexuality, which will help her husband one day. Believe me, I had to train my last wife to appreciate this aspect of her body, I wish she had done some of this on her own. But, whatever works for you.
Well said, Campion.