Why is there no such thing during the middle ages? Because to a degree, people were generally happy, had what they needed and were left to their own devices instead of being at the mercy of a control freak.
Citation needed. Big time.
Sure, people must have been happy under the whole feudal serfdom/slavery system. I mean, it was great if you were a noble or king but it sucked big time for everyone else. Existing (you could hardly call it living) in squalor, ignorance, and poor health in a vermin-infested hovel with no opportunity for a better life is what we should all strive for.