Majority of people say that only this life is worth living and they start seeking pleasures in this life and all the time they want everything in this life as maximum as possible and as early as possible. There is category of people that say enjoy life as it may end anytime whereas other say that life may end anytime so prepare afterlife by purifying the soul or simply by doing good deeds.
Problems with people arise when they follow the logic that there is no God because they believe in science that everything came into existence by chance as a result of an explosion termed as big bang. Half knowledge of science makes people believe that life of this world is the only life.
Logics make people suffer as they at some point become unable to give any reason or find any logic for the existence of God and prefer to stay happy with the concept that this is the only life worth living of forty to sixty years and after this there is a dead end, it may end anytime so enjoy maximum. That is why it is said that watch your thoughts because your thoughts ultimately become your destiny.