Look condoms are the SINGLE best line of defence (apart from abstinence) but they are not the magic perfect solution:Harbinger_ said:It also argues there is less chance of contracting STDs but they still recommend condoms which is of course understandable.
-condoms split or slip
-people are fallible and forget
-some infections can get past condoms
When there is cases of contamination then things like circumcision really help. Well, circumcision really only helps males, but vasectomy too also protects the "receiver" to a certain extent.
Really to protect yourself from STDs you really need layers of active defences.
-keep track of your partners and all consult for regular testing
-in face of contamination follow up with aggressive preventative treatment
-get all available vaccines when available (Hepatitis A & B, HPV, etc)
EDIT: -circumcision and vasectomy help reduce contagion and transmission rates respectively
Protecting you body from disease is a constant battle.