What propaganda did you take in growing up? I’m pretty sure mine was similar to this, except dad’s a realtor:
I grew up in a union household, United Paperworkers. I had absorbed a lot of ideas that I was not really aware of—most of them wrong. For example, I thought that businesses were parasites, living off the efforts of workers. Retail stores were middlemen who did nothing but jack up prices by buying stuff cheap and selling it at higher prices. Bankers were crooks who paid low interest to depositors and charged high interest to borrowers. These people were all evil and selfish.
However, I was the first person in my family to actually go to college. My Dad took a course after WWII, to draw the 52-50 part of the GI Bill ($50 a week for 52 weeks to any ex-GI who was enrolled in a class). He did not take economics, I did. I learned that the elements of business were labor, capital, rent and entrepreneurship. All of which had to paid or the system would not work. I learned that the middleman accumulates and stores products in a convenient location and saves customers the trouble and expense of searching out producers and bartering out deals with them. I learned that interest is rent on money. If somebody lives in your house, you expect them to pay rent. If someone holds your money they should pay rent as well. If the rent is too high or too low for you, go somewhere else. In an open market economy you have the right to do that. Some people keep trying to stop us from having that right.
As has been said about interest, those that understand it, earn it. Those that don’t, pay it.