1. Private insurance will not pay for a woman's well visit if they don't have a Pap smear. They don't care that the woman doesn't have a cervix. If you don't do it, you don't get paid, and it's just easier to do it no matter how nonsensical it is than it is to get on the phone with someone who is not medically trained and argue that, yes, you did do a well woman exam even though you didn't do a Pap smear.
2. There is a case to be made for anal Pap smears, because HSV also causes anorectal cancer in people who participate in anal sex. Unfortunately, because it's not standard of care, private insurance won't pay for that either.
(We don't even need to talk about Medicare or Medicaid because they don't pay for preventative visits.)