Basically everyone has been exposed to HPV and HSV who engages in physical sex, so the poll results of 80% "No, we have neither, and expect the same" are just the indication of not being informed. The medical study numbers say the opposite that ~80% of all sexually active humans have been or are currently infected with HPV & HSV whether they know it or not.
This is an activity of human life...being infected with bugs, viruses and bacteria and will always be...just depend upon the health of your immune system and medical treatment to clear the invaders from your body, otherwise...condoms are not a realistic protection either...the condom just helps to reduce the numbers if you are a very infrequent "ho". Over time and occurrence it is a done deal that you are exposed. Many a recently virginal girl is being treated right for both HPV & HSV, and surprised at the fact she was infected the very first time she had sex with her lover.
So consider if you know you are infected about others well being, but remember you are not "violating" virgins on their wedding night...you are engaging in party sex with already exposed couples. Make your choice or go to a desert island.