Decision on male circumcision!!!

I was just having a discussion with a good friend and we some how got talking about our cultures. He mentioned that in his culture, it is not mandatory to circumcise males and I said that in mine it is normal culturally to circumcise male children. He then asked me if I will be willing to circumcise my son when I have one. This got me thinking and I researched a bit into this because sometimes, one follows culture without knowing the meaning or the need for such culture. I found out that there are medical reasons to circumcise males (I am not into female circumcision neither is it in my culture). I don't know if it is mandatory by religion or by medical research. What if one's partner does not agree with male circumcision? What would you do if you had a son and you believed in male circumcision but your partner does not? Are there any particular reasons why people circumcise males and if so what are these reasons? Did you circumcise your male child or not?