I'm sort of a noob when it comes to tech and frankly much of the above fly over my head and it's hard for me to consume as a layman and newbie to crypto.

Coming from the traditional fiat system and being accustomed to having the banks and investment corps keep my money safe, it's difficult for me to adopt a system where I've to be "responsible" for the security of my money. No doubt, I agree with the paradigm change needed to "own it and be in total control", but I don't think the main stream population is ready to take such responsibility on their own.

I think for a long time to come, most will still rather have their life savings in banks/investments corps as long as they are regulated by laws and orders in a politically stable country. I can call the bank to reverse a charge on my credit card if it's stolen (if at my own fault), but I've nobody to turn to if my crpyto passwords are hacked.

Yes, I do note that banks and corps can also fail and go bankrupt, but it's easier for me to check their T&Cs to ensure insurance will cover it whether at private or state level. E.g. In my country, the government protects/insure up to $50K per saving account. I can't do that for crypto.

Until such concerns are addressed, it's really difficult to see how it can go mainstream. It's a balance between being in control of your own money versus having a 3rd party to be responsible for it... Or perhaps there's no in-between? Tough choice.