Thank you for sharing. I love the work ethic, drive, and hustle your Dad has shown along with the example of your parents living below their means.
I would caution those that do not invest and diversify into investable assets as inflation is stealing everyone's money if left in savings accounts. If you think about all of the things we spend our hard-earned money on - inflation is not at 2% - it's more like 6-12% and higher, depending on where you live.
In fact, The United States printed more money in the t last two years than in the first two centuries after its founding in 1776. Let that sink in for a minute.
(This is not financial advice - just stating my opinion)