the technology is not in questionblockchain is simply another word for security. be it making sure your messenger boy collected the protection money to aunt may calling to make sure you received the birthday card she sent you.
Now the real question with this type of security is, can you trust 100% of your current assets to cryto? if there was a power out, can you still go into home depot to buy your power generator? how about the grocery stores selling you the water and food you need in a power out?
and here is the biggest batte.. and I mean battle.. will all the governements just say the hell with all there money that they printed and all the millionaires out there just going to give up the wealth they have aquired to switch over to crypto currency? To answer that, just as you why you are here. yep trying to make a buck from trading. the very thing you are trying to get you are going to give it up..
I belive block chain can be a useful tool to track certain things but when it comes down to your life and status. thats a pretty big uphill BATTLE..