Re: What is the aim of circumcision of men in Islam?
What I am saying is that, circumcision is practice adopted by Ibrahim (AS) due to covenant between Allah and Ibrahim (AS). According to that covenant, all male descendant of Ibrahim (AS) should get circumcised.
Islam adopted the practice not as fard, but as Sunnah of Ibrahim (AS), and recommend that it should be practiced.
For children of Ibrahim (AS), not due to Islam, but due to the covenant between Allah and Ibrahim (AS), this is obligatory … so that the covenant … or agreement between Allah and Ibrahim (AS), gets fulfilled.
In practice, it does not matter, as all who are born Muslims do get circumcised (as it is recommended). Those who are not born Muslim but are descendant of Ibrahim (AS) get circumcised too, so if they become Muslim they are already circumcised.