There are medical indications for circumcision (circumcision) and religious. Medical include various phimosis (narrowing of the foreskin, preventing the full opening of the glans penis), often recurring inflammation of the foreskin (balanoposthitis), damage to the foreskin (for example, condylomas). There are clear indications for performing surgical treatment. As far as religious motives are concerned, this is a different story. Although personally I think that this is due to the fact that at that time and in those places where Judaism and later Mohammedanism originated, it was hot and dry. And this action had a hygienic background. Those who underwent this operation will better tell about the pros, but about the cons ... There is definitely one. Minus the foreskin.
Most often, circumcision is done in childhood, preferably in early childhood up to 3 years. At this time, the child can wear things that will not rub, tighten, and this will contribute to rapid healing and there will not be much discomfort.
If you decide to circumcise at a more mature age, you will have to face some difficulties here. Firstly, the head is already used to being under the foreskin, this is the most sensitive part of the penis (not for me to tell you), so you will probably have to face enormous discomfort. Secondly, it is clothing. The people around you will not appreciate it if you wear loose tricans (especially if you visit places with a strict dress code: university, office, etc.). And to explain to each counter-transverse as it is not ethical. Thirdly, perhaps the most common reason why men undergo this desensitization operation. At first, it seems that there is sawdust in the panties, but after getting used to it, the sensitivity will decrease. Some advantages can be derived from this (a long duration of sexual intercourse, for example), but there will also be disadvantages (for example, a blowjob will not bring pleasure, because there will not be a strong enough stimulus). I know all this from the experience of communicating with such young people.