Man craves company. He craves a response, an acknowledgement. A validation. Proof that he matters. The desire to be heard is built into everyone right from the very time one is born. Right from the very time you scream when you are hungry so that someone listens and feeds you to the time you talk when sad so that someone can comfort you.
Life is spent in a continuous struggle to make yourself indispensable and important to someone. A continuous attempt to be heard, to be noticed.
And life is also a series of disappointments.
The point is, when do you stop getting up after you've fallen down? And when do you stop talking when you realize no one's listening?