[kukx]

I do not perceive productive as equal to fulfilling. But I understand you mean that for some people the sacrifice would not be worth the extra pay. It is another issue. Being a cog in a machine for x hours a day is a sacrifice. One voluntarily becomes a slave but in return can enjoy the fruits of the labour in the leisure time.

Regarding the matter of education, it is not always an option to do what ones enjoy for a living no matter the acquired knowledge and the degree that confirms that. Some work is more valued than other. The market, we, decide that by our selective spending. One can become expert in the ancient history and end up working at Starbucks just because there is no need for their knowledge.