Depending on the environment you grew up in this isn't necessarily the case, high school and college particularly can be very high pressure and consume tons of time when you're not actively "at school". The pressure in college was so much higher than in a real job for me. Weekends used to be for homework and studying only. Weekdays after 5? Also homework. The stress and self inflicted pressure before finals and exams which determine 20%+ of your grade was unreal. Summers were for internships and those weekends were nice. But still not as nice as doing the same thing and getting paid 4x as much.