Life...or something like it!

This is not my original...I've read it or heard it from somewhere/someone else .
But , it's gotta be true
Life is not worth living unless you have a cause for which you are willing to die for .
I fully agreed . I mean it does make sense , doesnt it?
I remember an explorer mentioned in a magazine , how he trudged day in and day out alone in freezing antartica trying to reach the south pole . At one point , he thought how silly he must have looked to an alien from outer space if he had been observed from above . Then he thought , what if they have observed a typical office-goer commuting daily to his work place going through files ,taking coffee breaks ,the works you know...and back home .....and again the next morning........
So , do you have a purpose to your life ?Or do you simply drag yourself to do whatever you are assigned to ..be it work or studies?