I had DS done due to our history of thrush, diabetes and autism. Plus, I'd had too many friends who had needed to get their sons done when they were older anyway. A lot of my decision was based on experiences I had when I did some work as a carer with elderly men with dementia. They were having issues because they didn't have the capacity to keep it clean anymore but went into hysteria when someone else needed to check it out because of UTI's etc. It was very traumatic for everyone involved, and I didn't want to have the same issues with DS if he did turn out to be autistic, or having the opposite issue of him being so OCD he did himself some damage trying to keep it clean.

At the time, my DH wasn't done, and he had an issue that they would be different, but he fully could see why I wanted to get DS done, so his solution to that problem was to get himself done too at the age of 33 (when he suggested his solution to the problem I think it was pretty much one of the only times in our 11 year marriage where I was speechless "jawdrop: ). Anyway, he got done five months ago. Trust me, it was much more aggressive than DS, who frankly hardly noticed using the plastibell method. As an adult, the word eggplant comes to mind, although it was less painful than it looked apparently. Also, as a man who has both had his foreskin and also been circumcised, he is happy to report that the common argument that not having a foreskin makes sex less pleasurable is utter crap - which is good to hear if that is one of your concerns (I know it was one of mine).

I personally, would think that only getting one done when they are little might cause issues, particularly if they're twins. It would be different if one had to get done when they were older, but at this stage when your decision is based on being a preventative measure, I think it is either both or neither. It would be different the one with the kidney issue needed to have it done later, but like I said before it's a much more aggressive procedure then and he would have had to suffer multiple infections first before taking that route. But then again, he might not get infections even though his chances are higher.

No easy answer really.