Circumcision (Please, no nasty comments)

Trinni
This is a long post (sorry) the last 2 paragraphs contain my question. 
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My husband and I are so excited; we found out that we're having a little boy a couple of weeks ago. Now one of my concerns is circumcision. I've done quite a bit of of research and after much consideration feel that I would rather not get my son circumcised. (My husband, who is not circumcised, left the decision up to me.) 
I came to this decision based on these ideas:
1) I've seen the time it takes my husband to keep himself clean and it literally takes seconds in the shower.
2) My husband has never gotten an infection. 
3) We (and some other people we know) have never had issues with sex.
4) I don't like the idea of part of my son's body being cut off. 
HOWEVER, my sister is actually really upset with me about this. She feels that he will be made fun of because he won't be like the majority of young boys in the U.S. She also claims that it makes sex undesirable. 
SO MY QUESTION IS: How do you feel about circumcision and why? Has anyone who has uncircumcised male family ever heard of experiences such as the ones my sister was talking about? How did that affect them (you- if you were with someone who wasn't circumcised)?