Weekends

Why is it that we must work 5 days a week and can only rest 2 days? I mean those 5 days take forever to pass and when the weekend comes it disappears before you know it. What happened to finding the balance between work and play? On my scale 71.4% work outweighs 28.6% play every time. Im not sure what kind of scale the world uses. What's worse is that weekends are shorter than normal days. A Saturday is significantly shorter than a Monday, I feel cheated.