It's all about sleep!
When GOD gave us a home he wanted us to be able t relax and see the next day. He needed to know that we understood him and his mighty ways.
Sleep allows the body to heal, it allows everyone the opportunity to fix what went wrong yesterday or work towards what goal we have for tomorrow. Without adequate sleep, you are deprived of the chance to enjoy either benefit.
We as human-beings are being tested daily to see how we treat others in this universe and wether or not we are entitled ever-lasting life. Sure most will ignore those, but I can tell you this.