> Right - so imagine that you didn't have that opportunity to do that academic work because you have an elderly parent at home who needs care. You've got two little kids at home who aren't yet school age and thus needs care.
Many people will choose the elderly parents and little kids over academic work and promotions, given they have enough money to support themselves.
The academic work and promotions are just a means to an end, which for many is the ability to support and raise a family.