Why do we write about love?

I think we write about love for a lot of the same reasons we write about death. We write in order to express our emotions and what we see and go through everyday. But I think that death and love are probably the two most written about topics because they tend bring out our strongest emotions. Love is believed by many to be the one thing that transcends death. In many ways love is all encompassing in both death and life it moves for good or evil. That is why I think we write so much about love because you can't escape it.