A perfect God, Who was complete unto Himself, did not bring the world into existence for His own amusement, to see what a mess we could make. He created the world with a purpose - a purpose that depends entirely on man, and particularly on the Jewish people, fulfilling our tasks. Rather than feeling the mitzvot as a burden, the observant Jew cannot imagine life without them. They reinforce every moment that view that life has purpose and that everything we do is meaningful. Time, for us, is not something to be killed.
Every moment is a priceless opportunity.
Kill time and you kill yourself. The ubiquity of the Law distinguishes Judaism from every other religion. Indeed, Judaism is not, properly speaking, a religion at all. Rather it is an all-encompassing way of life. Everything we do is equally before God.