Saint Paul:
7 But I wish everyone were single, just as I am. Yet each person has a special gift from God, of one kind or another.
8 So I say to those who arent married and to widowsits better to stay unmarried, just as I am.
- 1 Corinthians 7 (for further context)
God Himself said that it was not good for man to be alone and God Himself who created woman to be his helper and companion.
God created sex, and He instituted marriage and blessed it.
The Catholic church can beat the sex is bad/marriage is bad drum all they want and they are only going to be at odds with God.