Yes, you're right in saying it's a chemical reaction, but so is every other goshdamn emotion you feel. "It's all in your brain." Love, happiness, anger, jealousy, surprise... You can't possibly tell me that none of those emotions are real because they're "just chemical reactions." I refuse to accept that. Don't you feel anything real ?
If you want to get fussy about it; war and peace would mean nothing. Just words. Meaningless words. What kind of a world do meaningless words create ? The one we're living in. I hate to think meaningless words have such an impact on our world. I'd like to think that words do have meaning, because we feel them deep down inside of us.
It's not just about chemical reactions in our brains. It's about being human. We're allowed to feel pain, happiness, illness, and love. We're created to do so, and I don't think it's human nature to pretend feelings don't exist.
'Tis better to have loved and lost than never to have loved at all.
~ Lord Alfred Tennyson