Richard Hogan: Why do people have affairs?

"You put Homo Sapiens together, and you are going to get scandal and sexual transgressions - nothing quite gets our tongues wagging like the bad behaviours of others."

Pic: iStock

Modern Homo Sapiens have existed for about 160,000 years. 

In those early days of human existence, we were a communal, nomadic people, which means we shared all experiences.