Members of the Church of Jesus Christ of Latter-day Saints covenant with God that they will refrain from sexual relations outside of the bounds of marriage between a man and a woman. That is one of the Lord's commandments. I will not go into a deep public dive on this subject. I don't feel inclined to be very public about a subject that is so personal.
This much I will share. I know from personal experience that keeping this commandment allows me to feel closer to my Father in Heaven and have his Spirit more abundantly in my life. I feel accepted and nutured by Him. Not keeping this commandment, causes a withdrawl of the Spirit and a spiritual regression of such magnitude it takes significant time and repentence to return to the spiritual place you started from. It is not a good feeling to have the Spirit withdraw from you after living years of having it as your constant companion.
Procreative acts and powers are sacred and ought to be treated as such in our thoughts, words and deeds. Whatever my personal beliefs or desires may be, I choose to live the covenants I have made with the Lord to the best of my ability. I encourage others to do the same.
That being said, I hold no judgement of those who make choices different from mine. Each of us must struggle to do our best according to the knowledge and light we are given in this life. I will not be the judge of anyone else.