I'm not implying you don't find marriage in ancient times that resembles modern marriage. I'm pointing out the bold generalizations. > We know for sure, since

I'm not implying you don't find marriage in ancient times that resembles modern marriage. I'm pointing out the bold generalizations. > We know for sure, since Old Egypt/bronze era, marriage was almost universal. For sure almost. Earth's experienced a larger number and variety of cultures than some people give it credit for. Let's not make generalizations about human nature based on someone else's generalizations about human past. Noone owes a justification for acting the way they do. When you introduce justifications, you enter the realms of dogma.