When a guy is uncircumcised, moisture can get trapped between his penis and his foreskin, creating the ideal environment for bacteria to incubate. “Female sex partners of uncircumcised men are at increased risk of bacterial vaginosis,” says Supriya Mehta, Ph.D., an epidemiologist at the University of Illinois at Chicago. Guys who aren’t circumcised may also be more likely to pass along any infections they have, including yeast infections, UTIs, and STDs (particularly HPV and HIV).

It can be difficult to keep an uncircumcised penis fresh 100 percent of the time. “Although most men that are uncircumcised do a very good job cleaning below the foreskin, it’s more of a task for them,” says Boyle. As a result, “some women may feel ‘cleaner’ with a man who’s circumcised.  That could enhance a woman’s sexual function, just because she feels less likely to get an infection,” says gynecologist Alyssa Dweck, M.D.  In fact, women who experience a boost in pleasure after their partners get circumcised often credit the change to an increase in cleanliness. In other words, they enjoy sex more because they’re less worried about STDs, not because of any actual anatomical difference, says Mehta.

Conclusion

There needs to be more study on the pro and cons of circumcision.  There is evidence that having circumcised penis reduces risk of HIV infection.  But sex with being uncut seems like it just feels better.  Once they have concrete numbers, I think it will be easier to determine which is better. At least there is a debate now. It used to be regular routine in the US. Perhaps advances in modern medicine will be able to restore the foreskin one day.  So guys that have been circumcised and uncircumcised can be the real experts as to which is better.