You do NOT get a choice about getting an education in a vast, vast majority of life paths in the developed world.
I know a lot of people and exactly two of them are working in the field they got degrees in. You cannot always control the direction of your life, anything from medical issues to family emergencies to economics in your region can profoundly impact your chances of landing a career in your chosen study field, or even just getting a simple job that can pay back tens of thousands to hundreds of thousands of dollars as the interest snowballs.