Helen Fisher discusses how the the foundations of societies have changed because of love in her emotion evolution speech.
The evolution of love and its biochemical foundations and social value is a constancy that society is taking notice of. Love is an intense feeling that people crave for. It's a heavy indicator on how people determine multiple facets in their lives. Fisher discusses that when an individual is in love, they place a special meaning on a person. It's an "intolerable mental itch." She sites how the current changes in sexual equality are diverging back into past societal structures where women were considered the equals of men.
People weren't built to be happy, but were created for the sake of reproduction, according to Fisher.