First, masturbation can be a form of homosexuality because it is a sexual act
that does not involve a woman. If a man were to masturbate while engaged in other
forms of sexual intimacy with his wife then he would not be doing so in a homosexual
way. However, any man who does so without his wife in the room is bordering on
homosexuality activity, particularly if he's watching himself in a mirror and being turned
on by his own male body.

Second, masturbation is a form of monosexuality because it is sex that does not
include another person. Since sex is given for such purposes as oneness (Gen. 2:24),
intimate knowledge (Gen. 4:1), and comfort (2 Sam. 12:24), having sex with oneself
seems to miss some of the significant biblical reasons for sexual intimacy.

Third, masturbation is often done in haste because of the mortifying embarrassment
of possibly getting caught in the act. Subsequently, masturbation encourages a man to
become a notorious minute-man who will not be well skilled in the self-control necessary
to satisfy a wife.

Fourth, masturbation can establish a pattern of laziness. If a single man wants to
have an orgasm, he needs to first become a man and undergo the hard work of courting
and marrying a woman. If a married man wants to have an orgasm, he needs to first
undergo the hard work of loving, leading, and romancing his wife. But, lazy men are
prone to rub one out in the shower each morning rather than undergo the labors usually
associated with responsible masculine married life.

Fifth, though masturbation is biblically permissible, the question remains whether
or not it is beneficial for you ( 1 Cor. 10:23). God's men are quite divided on this matter,
as many find it to be very beneficial to them before they are married, during seasons of
their marriage when they are away from their wife, etc. Conversely, other men claim
that masturbating is not beneficial for them because they become mastered by it and
unable to keep it under control (1 Cor. 6:12). This is biologically caused by the fact
that masturbating does temporarily relieve sexual urges and frustrations, but also causes
greater and more frequent biological urges for additional ejaculations. Practically, as the body emits semen it then quickly produces more so that supply can keep up with
demand. So, a man who masturbates to ejaculation will find himself masturbating with
increasing frequency as his body continues to demand more frequent relief, thus negating
his original goal of masturbating to relieve sexual frustration.