>>12413277Kissing is not normal, it is behavior resulting from changes to the hypothalamus resulting from HSV infection. Research has shown that HSV-1 targets specific areas of the brain, including the hypothalamus, which plays a critical role in regulating appetite, sleep, mood, and hormonal control.
HSV infection inhibits your capacity to realize how fucking disgusting your behavior is. You are more likely to slobber on things without feeling bad about it. This is why your disgusting aunt gave you horrible slobbering kisses when you were a child, she was being used by HSV to spread itself.
"Kissing" as a cultural phenomenon is another consequence. Viruses can have a subtle effect on cultural norms as they are transmitted over many generations. Even those of us without infection have become children of the virus.