Yes, I am circumcised. I would say that I'm happy about it, but I think that's strictly for aesthetic reasons. However, aesthetics are based on societal preferences so it has no reason in logic.
That being said, I agree with Spooled. Though it may not be as damaging as female genital mutilation is, it is still an mostly, unnecessary procedure and therefore most definitely mutilation. I don't hold ill will towards my parents or doctor though. Especially since they are just part of the system. People are not infallible and will make mistakes and the likelihood of mistakes increases when an entire society considers it normal.
If I have a son I will not have him circumcised. If a medical reason arises or he decides to do so, then that is when it will be done. The negatives of that are that he (depending on age) will remember the procedure, and can also remember having foreskin and may wish he still had it. However, not mutilating my son unnecessarily outweighs those possibilities.
Spooled, have you ever tried softer and/or more supportive underwear? I used to have some abrasive underwear that I noticed when doing exercises such as jumping jacks. I replaced those rather quickly as they were quite irritating. Feel the underwear before you buy it.
Secondly, by your anger I would assume you have researched it, but if not...do you know that there are ways to restore your foreskin? It could take years to complete the process, but it is possible. It's just skin and it can be stretched and multiplied, just like when people gain weight. It may not be exactly the same as there might be some frenulum snipping during circumcision, but it will still be natural skin covering your glans. If you haven't heard of it, do some research. There are several different products available to help with foreskin restoration, from tape to weights, etc. I couldn't tell you which one is best, so definitely do some research.