Makes a bunch of sense to me.
I think essentially everything could be "dumbed" down to like two things. Your right it really isn't an appropriate solution to a complex problem. Just another way to associate a situation.
The idea though that emotions can effect DNA still blows my mind. I could see how and why, but I guess I'll just need to look more into the studies done on it.
[edit]
Here's a link on that:
http://www.in-vision.us/DNA_and_emotions.htm
I'm not sure if it'd really reputable but it's interesting. I'd be interested in seeing more info for and against this, and I also wonder what the real complications this could have on a person's well-being.