Overriding Parents' Medical Decisions for their Children

I meant men as in males across all ages, not men as in adult males (to clarify, as I can see how people read men and think adult males). And you agree that 111 to 125 infants circumcised for one reduction in UTI seems to not be worthwhile, and yet you claim the benefits are mostly only found in infants, and then conclude the parents (who lack medical expertise) should be the decision makers. This reminds me of the TedTalk by Iyengar (2010; starts at about 14 minutes, https://www(dot)ted(dot)com/talks/sheena_iyengar_on_the_art_of_choosing#t-830513 (Links to an external site.)Links to an external site.) about choice, and she recounts research in which they tested the coping of American and French parents after deciding whether to remove life support for their just born infant after suffering complications, with the key difference being who decides to remove life support, the American parents, or in France, the doctors make the choice. What they found was that one year after the fact, American parents were coping less well than their French counterparts, which suggests that choosing was detrimental to their health overall. Although the circumstances are different, I relay this as evidence for how/why choices matter, and who is best suited to make choices.
As to HIV transmission, the CPS paper unequivocally states, "There does not appear to be a significant role in decreasing male-to-female transmission in HIV-discordant couples." Further, as cited in Crooks and Baur (2017), Berer and the WHO/UNAIDS echo this (p. 502). So it seems that male circumcision only helps prevent infection, it does not reduce the odds that a male may transmit the HIV virus to their sexual partners (I should add that there is some evidence that while it doesn't reduce all or most STI's, it may reduce infection [not transmission] with HPV or genital herpes).
You seem to really rely on parents having their child's best interests at heart, as well as being rational and well informed. I am not saying that parents don't love their offspring, but rather that parents are not qualified to make medical decisions like circumcision, and further, may not be arriving at their decision for the right reasons (medical vs cultural/historical/religious). If you choose to have your child circumcised to make them like yourself, to have them conform to beauty standards of the time period (honestly penises are kinda ugly if you ask me, vulvae are referred to as flowers and penis are sausages or hot dogs), and to a lesser extent to fulfill religious ideology, I believe you are doing a disservice to your son, and depriving them of their future liberties.
New Reference
Iyengar, S. (presenter). (2010). The art of choosing. [web video file]. Retrieved from https://www(dot)ted(dot)com/talks/sheena_iyengar_on_the_art_of_choosing#t-830513