Last day or not, we will not change

Whether as a believer or an antheist, we some how felt that the world that we currently live in will end, or should end, reason known probably only to our inner most heart.
Do you need some more facts to tell you that the Universe will not last forever? here is another one from Seed. (Link)

Since that is so true, why do we struggle so hard every day to maintain whatever that will be destroyed in times? Wasn't there some hope that we can feel but cannot express, and make us go on day by day?