None there is no reason to be circumciced exept under extreme circumstances.
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fluid retention in pregnant woman
We are not told in the Bible about Circumcision and the Midianites. You might find something in Midianite history.
You might need to specify a time period.
It cannot be as there will always be those for and against.
The doctor might tell you to put new gauze on.
Some of them might want to become doctors or nurses when they grow up.
A disease does not always get resolved. There are lots of diseases which have been around for thousands of years and are still not resolved. You might as well ask why the common cold has still not been resolved, or why cancer is still not resolved. Medical science does what it can. These are very difficult problems to solve. If you can do better, by all means do so. The Nobel Prize Committee is eagerly awaiting your work.
One might opt for such surgery if they are unhappy with their appearance. They might also have this procedure following an accident, difficult delivery of a baby or as a result of a medical condition that they develop or inherit.
Hugely unlikely but not entirely impossible. The wound might get infected. On adults, the procedure might be done under a general anaestethic, which does carry a little risk.
Circumcision is only necessary for medical reasons. Circumcision is the amputation of an important body part. and the only reason to do such a thing is if it is in order to treat a condition that can not be treated in any other way. For example we don't cut of a child's breasts because one day in the future they might get breast cancer ( better do it now then wait till trouble develops). most conditions involving the foreskin are easily treated and removing it for no reason is in fact harmful.
You need to check for any condition or disease that might cause illness or injury as a result of your changed physical activity.