The larger the list of sins, the more sinners.
The more sinners, the more repentant ...
Remember that initially there were only ten commandments.
And they have come down to us in censored form. What does it mean "do not commit adultery"? If something is forbidden to me - I want to know what exactly! As they say, you need to know the enemy by name!
The vagueness gives scope for interpretation ...
Well, it's not only Christians. The Buddhists write in the Vinaya rules that if a monk could not restrain his passion and poured out the seed on the Earth, he must report this before the meeting of the Sandhi (community), repent, and no longer break the vow. I don't know exactly how among Muslims, but it also refers to adultery. The Jews are the same as the Christians. Only the teachings of the Raelites, whose founder even traveled to schools with lectures on the benefits of masturbation and science at the same time, looks positively on masturbation.