What is the name of that feeling?!

This is a open question to all....

Name the feeling which is still fresh and it lives alive inside all human beings.

CLUES:
1) Its not a thing.
2) Its more prominent among all of us
3) It can make a man both positive & negative
4) Something outrageous, at times peaceful too!
5) A human who overcomes this feeling is like a bird. He is free, without any bounds or barriers. He is the OPTIMISTIC person, I can say!
6) This feeling prevails from ancient time of Human Civilisation
7) It's not LOVE
8) At older age, this feeling gets faded away, mostly....

Send in your answers to my mail id
Or else provide your comment along with your mail id.

My mail id is: imagine4paintings@yahoo.co.in

Correct answer will be rewarded.

Bala.