If you’re not sexually active, is it still worth doing?
“The route of HPV transmission is primarily through skin-to-skin or skin-to-mucosa contact. Sexual transmission is the most documented, but there have been studies suggesting non-sexual courses.
The horizontal transfer of HPV includes fomites, fingers, and mouth, skin contact (other than sexual). Self-inoculation is described in studies as a potential HPV transmission route, as it was certified in female virgins, and in children with genital warts (low-risk HPV) without a personal history of sexual abuse. Vertical transmission from mother to child is another HPV transfer course” [1].
You’ve got a low probability of getting polio, but there’s no reason not to be vaccinated if you can.
Even if you already have a strain, there are multiple types. In fact, people who got a vaccine early on, should consider an updated shot for more complete protection.
Something like 80% of people are sexually active at all will be infected with HPV at some point. You may not have been sexually active, but your future partners may have been. I personally have a friend who went through stage 4 cancer contracted from her (now ex) husband.
So, of course not literally everyone needs to take it, assess your own risks, but it's quite an easy, highly effective vaccine: don't overthink it.