Hello Christians,
Before we conclude without proper exegesis, let us discuss this matter. There are some facts of logic which we must consider:
1) Masturbation has no specific label of "sin" in Scripture. What believers have is deductive reasoning or inferences based on verses referring to lust or fleshly desires. So, for anyone to jump at inquirers with immediate claims of "sin" demonstrates the negative stereotype of Christians as being irrational thinkers with a quick answer of guilt-implying. Guilt implications do not convey grace, love, and compassion for human struggles from divine believers.
2) If masturbation for singles is sinful in itself, then one might ask why? Why would God hold such authoritarian mentality over the body which contains five neurotransmitters, secretion fluids that require exiting, and endorphins which also require nourishing the brain chemistry? If I had to refer a recovery addict to church, then some of you would signal a red flag for me.
3) Many single men choose masturbation in order to cope with Western attitudes of women. I choose it because promiscuity, STDs, and divorce rates are at an all-time high. Modern women literally scare me with their disregard and inflated entitlements. If I was to accept some of these "sin" claims, then I would be in a constant state of depression, imbalance, and hopeless thought except in the afterlife. God offers no guarantee of a special "mate" in this life. In fact, Paul advised men in 1 Timothy 6 to avoid marriage and stay single. Solomon said something similar in Proverbs 30. Does that sound like God is trying to be a "matchmaker"........? No.
My advice: if you are single, then masturbate to avoid promiscuity or adultery. Allow your body to feel chemical nourishment which was also designed by God. I would never advise people to marry under today's standards. Even 50% of Christians cannot stay married.