Age? Qua?

Age.
The thing we all think we can lie to ourselves, and others, about. When you're in school, the (almost) first thing that springs to your lips when you meet someone new is 'how old are you?'.

This got me thinking (obviously, or this wouldn't be here, would it?) Humans are the only ones on the planet who keep track of their age (as far as I know).
This seems very strange to me... why would we keep track of our age? Is there a purpose to it?

And the only reason I can think of for keeping track of age, is.... nothing. Completely and utterly pointless practice. We could just live our lives from one day to another... there would be no concept of 'old' and 'new'. Things would be kept till they broke, since there is no 'old'. 'Old' people wouldn't be chucked in nursing homes (not because of their age anyway, 'cause age doesn't exist, remember?)
We wouldn't have product lines being rolled out every few months... there in effect would be no deadlines, except 'next time the sun rises' or something.

Why this sudden elimination of time, you may ask. Well, as I see it, the concept of age is just an extension of the concept of time... and when I eliminate one, I figure just as well to eliminate the other, or sooner or later it will evolve again. So if humans had never figured out the concept of time in the first place, we wouldn't be old, there would be no new, there would be no deadlines for anything, there would exist a sort of gentle flow of life, without the hectic pace of today's life.

Life, in short, would be relaxed. People could do whatever, whenever, as long as the sun didn't rise the next day. Or the next cycle of the sun didn't take place.

But if you think about it, if time didn't exist, then most advances in Science wouldn't have happened, for all its worth. We would still be sitting in caves, chanting 'Ug', and clubbing each other on the heads.

That isn't my idea of a good time, so I figure whoever noticed the sun going 'round our earth, and charted it as 'days', and then split it into twenty four, and further split it into 60, and further split that into 60, and whatever... they were the smart ones. They had no idea what it would do for the future (probably) but it did more good than harm... that can't be all bad, can it?