Not having chickenpox (and not being vaccinated for it) isn't really an advantage. Chickenpox as an adult is serious business: complications like pneumonia and encephalitis are much more common, and there's a significantly higher risk of death or hospitalization (75% of deaths from chickenpox are in adults, despite < 10% of the cases being in adults). You're also at higher risk for shingles if you catch it as an adult than as a child. Chickenpox is extremely contagious; it's airborne, can be transmitted just from being in the same area as someone with the disease for 15 minutes, and over 90% of people exposed will come down with the illness.
If you didn't get it as a kid you really should get vaccinated for it as an adult. Being exposed to the attenuated form of HHV-3 in the vaccine is way safer than actually catching the disease.
In my 20s. I suppose it's remotely possible that I contracted HSV since then without ever having any symptoms, but my understanding of HSV is that with all forms the initial infection is obvious so that's quite unlikely.
We're not talking about HPV, which I (and you) very likely have wether we know it or not, without vaccination.
I'll announce my scarlet letter to make a point. I was recently tested for HSV and came back positive for HSV-2. I've never been tested before so I have no idea how long I've had it, but it was a surprise because I've had zero symptoms. In fact, I figured it was a false positive so I got re-tested.
