James Kushiner of Touchstone Magazine comments on February's  National Geographic article about the biochemical basis of romance and love.  He doesn't seem to think it's useful -- or romantic -- to think about the underlying biochemistry of emotion. He writes,

Perhaps it helps even more than oxytocin to belong to a really big and loving family when all is said and done.

Neurochemistry is one of those things you don't notice  when it's working right.  But I think there's a growing percentage of people growing up without loving families for whom the oxytocin response isn't working right. For those of us, understanding our neurochemistries can be the first step in healing.