Given your reasoning, why would a sexually active adult with numerous casual partners wear protection? 
A case of Herpes, Gonorrhea, Crabs, Syphilis or Chlamydia trachomati won't kill ya , at least not right away, and all can be treated.................But yo, if ya can, " weather these diseases " why bother with protection.
Actually, come to think about it, I find seat-belts annoying too.