I assume you are referring to circumcision, no? Well why don't you say so? Why are you being so mysterious? It's a very common procedure and most men who are circumcised when adults report that it does not diminish sexual pleasure.
Most women prefer having sex with men who are circumcised as opposed to men who are not and there is much less chance of transmitting disease and infection to a woman through intercourse when the man's penis is circumcised.
That, to me, is a really big advantage for circumcised men and their sexual partners.
You need to do some research. For instance: Do you know that cervical cancer is almost unknown for Jewish women because their sexual partners were/are usually circumcised?
Your ignorance of sexual health is shocking. So stop talking about "assaults with knives" and so on