9) Consider the health risks.
OWO, CIM (and nowadays some girls are openly advertising swallowing cum), seems to be the order of the day. With the prevalence of HIV and the increase in antibiotic resistant STD'S and diseases the risks are increasing. See this thread:
www.esa.co.za/forum/thread.php
In addition there are some serious STD'S (some of which are not curable), which can be caught regardless of whether or not one wears a condom.
www.stdcheck.com/blog/stds-you-can-get-while-wearing-a-condom/
The risks are very real, condoms or no condoms. Every punt is a chance to get infected and (God forbid) infect other innocent unsuspecting partners such as a girlfriend or spouse.