As a psychologist, I will say that this is a serious trauma.
And note one regularity that where circumcision occurs, there is a woman in a completely dependent position and there is a problem of sexual harassment. I am Jewish and am against it.
As mentioned above, it is necessary to separate two concepts: conversion - conversion to Judaism, and brit mila - ritual circumcision in Judaism, which boys in traditional Jewish families undergo on the 8th day of life.
Not really. Giyur is a transition to Jewry (or to Judaism, but only in Russian are these concepts divorced). Eniwei, a person becomes a Jew. And for anyone who is a Jew by birth (the son of a Jewish mother) or a Jew by such a conscious step, there is a procedure for "initiation" of himself as a Jew. So it is impossible to pass conversion without it. If translated into a metaphor (voiced in the link below by Mikhail Stavropolsky): there is a certain agreement with Gd, everything suits him from our side, us from him, all the documentation has been prepared, it remains to make a signature. That is, to perform the rite of brit-mila (circumcision). It was I who answered the question "Why is circumcision necessary?" from the point of view of the Jewish tradition. The procedure is performed by a specially trained rabbi, and for this he does not need to have a complete medical education.
On the other hand, this procedure is carried out for medical reasons, for example, for phimosis. It is performed by a surgeon, and by Jewish surgeons, including if the Jew is a urological surgeon. It is logical, right?)
As a future doctor (and a Jew, for that matter), I have a positive attitude to the procedure of ritual circumcision, at least because it makes the future life of a man easier. Here the gentlemen share their impressions: thequestion.ru
Some time ago, by the way, in the United States there was a fashion for circumcision among secular men of various nationalities - they did it purely for pragmatic reasons of hygiene. Indeed, this is an excellent prevention of infections, since the likelihood of the development of a nutrient medium for microorganisms under the foreskin decreases, and therefore, the risk of the growth of populations of pathogenic bacteria among them decreases. And it's not about being lazy to take a shower.
Conversion and circumcision are not exactly the same thing. You can perform conversion, but do without circumcision.
Circumcision, in general, is a useful thing, if you do not bring in some kind of infection. Under the foreskin, active substances are secreted, which can even cause oncology. They must either be washed off regularly and thoroughly, preferably with soap. Or cut off the foreskin, then these substances will rub off on the clothes. Of course, this is not the equivalent of washing with soap, and the clothes will emit a smell after that, but it is still better than nothing.
If you consider yourself a clean person and wash regularly, then you may not bother with any what circumcisions. And if you are ready to stain your clothes with odorous secretions, just not to wash, then you cannot do without circumcision.