Circumcision is a highly controversial procedure. The debate tends to be polarizing and is messy, in the sense that it represents the intersection of medicine, science, tradition, sexuality, aesthetics, religion, and politics. A recent debate at Debate.org asked, "Do females prefer males who have circumcised penises?" There are hundreds of responses. Here's a sample and the current results (which cluster around 50:50 over time). Click to make larger:
All of the other comments for and against here.