How harmful is it to men not to ejaculate?

　　During sexual intercourse, some people will, for some reason, hold back from ejaculating when they reach climax, or even pinch their penis with their hands during orgasm to prevent semen from ejaculating. This kind of forbearance is harmful and unhelpful.
　　
　　1.Reasons for resisting ejaculation
　　
　　Since someone does this, there is naturally a reason for him to do it. The common reasons are as follows.
　　
　　①fear of pregnancy
　　
　　People who do this are mostly seen outside the body ejaculation For those who reach orgasm in the vagina, they are afraid of getting the woman pregnant, so they have to hold back from ejaculating and pull out immediately.
　　
　　②To prolong sexual intercourse
　　
　　When some men are living as a couple, in order to show their sexual ability, they always try their best to prevent semen from ejaculating, so as to prolong the sexual life of the couple.