>Circumcision results in significant loss of erogenous tissue
http://www.ncbi.nlm.nih.gov/pubmed/8800902
>Circumcision has negligible benefit
http://www.ncbi.nlm.nih.gov/pubmed/9091693
>Neonatal circumcision linked to pain and trauma
http://www.ncbi.nlm.nih.gov/pubmed/9057731
>Circumcision may lead to need for increased care and medical attention in the first 3 years of life
http://www.ncbi.nlm.nih.gov/pubmed/9393302
>Circumcision linked to psychological trauma
http://www.cirp.org/library/psych/goldman1/
>Circumcision may lead to abnormal brain development and subsequent deviations in behavior
http://www.ncbi.nlm.nih.gov/pubmed/10657682


Circumcised men had different sexual practices from genitally altered men. Circumcised men were more likely to masturbate, to engage in heterosexual anal and oral sex, and to engage in homosexual anal sex.
https://pubmed.ncbi.nlm.nih.gov/9091693/
Laumann EO, Masi CM, Zuckerman EW. Circumcision in the United States: prevalence, prophylactic effects, and sexual practices. JAMA 1997; 277: 1052-7