When I started seeing escorts about ten years ago, I had major anxiety about STIs. I accessed various medical studies (using my academic credentials) on the topic in order to estimate the risk that I was facing in having unprotected oral and protected intercourse. I became quite knowledgeable on the topic of STIs, even if a risk estimate remained elusive. I also even called a free telephone line about HIV on a few occasions to be reassured. Fast forward ten years (and a total of zero STI acquired, confirmed by frequent testing), I realize how effective condoms are, and my anxiety has greatly diminished. As a responsible adult I do not understand those who have unprotected penetrative sex with casual partners. One thing for sure though: they are less anxious than I am!