Too Long; Didn't Read
The technology of blockchain is not ready for primetime. It is susceptible to capacity problems, system failure, unanticipated bugs, and perhaps most damaging, the huge disappointment of technically unsophisticated users. Much like the internet in it’s nascent days, there needs to be a lot of experimentation, trial and error, before blockchain can be used by people in their day to day lives. Of course there exist mature applications like digital currency, but then again blockchain needs to go beyond just currency transactions.