And what's the issue? Simply a vicissitude of being human.
This site reveals a lot.
http://www.cdc.gov/std/herpes/screening.htm
"HSV blood testing may be useful for people seeking an STD evaluation, but CDC does not currently recommend routine HSV testing in someone with no symptoms suggestive of herpes infection."
So people don't test for it, on purpose. It is assumed that the sexually active had it and have HPV. The medical community is basically saying "who doesn't have it?" if you have multiple partners.
Exactly, little patches.
It is unclear whether HSV1 provides protection against HSV2. Statistics and studies suggest not.
But having HSV1 means that the symptoms are much less than a primary HSV2 infection which is one reason why many people may not appreciate what they have.
Mostly though, I think ignorance plays a pretty big part. I am not sure I can fault this either.