A lot of things plague our human mind and most times we don't get to investigate them to the core before we give in to that fear of the unknown.
You've dived into some of the innate fears of humans and it shows how much time you've spent looking and searching for answers(for your fears). Many don't and simply hide them.
I have many fears and I think one of the innate ones is feeling powerless(like you've pointed out) but working out daily has helped me get that fear out whenever it comes. We all have our coping mechanism for all these stuffs, but I believe yours is no doubt the best approach as it involves getting the mind to see what's right in front of it.
I had to quit working and quit al my goals for 4 or 5 years and just dig to figure out how important it is to dig and clean this shit out. It may not be necessary for survival but it is necessary for becoming more fulfilled and changing certain things about my life.
I think and hope other people can learn it faster and more easily than I did. If I had listened to my intuition from the beginning I would have made much faster progress.
Thank you!