
People of all ages can attest to this Random Good. It all started in the early years of school. You eagerly awaited the end of your school day so you could go home and have your after school snack while watching cartoons. It continued in High SIn College, your last class of the day would end, and you could enjoy the rest of the day relaxing at your dorm or apartment.
In the working world, the day is done, usually, the moment the clock hits 5:00 PM (or any other shift ending time, for you non 9-5ers). It's at this time that the mental/physical burden of work should clear from your head, and you can go home and relax. No more emails, reports, excel, or supervisors.
When work/school gets out, the obligation of the day is usually done. You are now free to do whatever you want. This gives you a daily feeling of euphoria, even if it lasts only 5 minutes. Sure, you may have home obligations, but they're usually better than work or school.