Rationality..or..Feelings?

I just realized something.Is it us people who make things SO complicated? Or are they complicated by default? We breathe,drink, eat, sleep, grow up, breathe, drink, eat, sleep, grow old, breathe, drink, eat, sleep, we die.
Why are there so many things in this life to be angry about, or happy about, or desperate about?
Some people say rationality is what differs us most from animals, I say no. Not rationality, but feelings.
It's not out of rationality that we actually do things, but out of anger, desperation, love, gratitude, bravery, malice,  etc.A huge amount of feelings forms a quality, A huge amount of rationality forms... nothing. If we felt nothing, what would common sense be, but a big fat nothing?  Feelings guide us, feelings define us. 
And, since no man is born insensitive, it is, after all, pretty logical that it's in our nature to complicate things.But you know what? When I think about it,All of the confusion comes from rationality. Maybe if we weren't so rational, so
 reasoning, so SANE... We are creatures of instincts, and if we were not so afraid to rely on them things would be so much better. 
Ok, maybe in the end it all comes down to rationality. Humanity's biggest problem. AND privilege.