I never felt a need to pay back my parents, but a lot of that is because of how I was raised. What I mean is, for example, no extra money was ever given unless I worked around the house and did chores. So, I was mowing the lawn at age 12, cooking full time for my family a few years after that, vacuuming, cleaning bathrooms, dusting, etc. And then the money I was given, my allowance, was next to nothing. It was something like $5 a week, and that was not in a day and age when $5 was a lot.

All of my peers got $25 or more and had much less chores to do. My parents lived very frugally, so I was never taken out for clothes shopping or to have any pampering, etc. I did not get my own vehicle until I was on my own, out of the house, and supporting myself. I was living on my own since 17 1/2 and fully supporting myself 100% at 18 1/2. Those are only some examples, but for me I did not ever feel the need to pay back my parents for anything.
At the point in my life now, if I go out to eat with my parents, the majority of the time either I pay or else I give my father money for mine and my children's food. It is very rare that he pays for us all, even though his income is more than 10 times my own. This is just how things are.
