Security issues are a nightmare with this.
If you put you savings your money in BTC you can't sleep at night knowing your money is safe unlike having it in the bank, if it gets hacked they replace the money.
Giving time and the right genius hacker even the most sophisticated security measures can be hacked.
Yes what if one dies with all this high tech security in place, surviving relatives won't be able to access the money.
This is complete nonsense.
You rent yourself a security box in a bank, and leave all your access details in there. And in your will, you give (whoever you want) access to that.
Stop spreading FUD that bitcoins are inherently impossible to keep secure.