Why is time so valueless to us?

15 minutes is a lot of time, so is an hour, & so is a day. We live in the present, we exist in this moment, but so often we forfeit our moments now for some moment in the future, that we're not certain will ever satisfy us. The best we can do is both, work towards the future [i]through[/i] all of our individual moments, enjoying the present & filed with excitement for the future.