Maturity of this tech as good as how much we use it?
Lots of you are saying voice will never be as good, but how can it get as good as text-based input unless we actually start using it? You can't improve something that doesn't exist or doesn't get used.
I personally love my Echo Dot and did the similar thing by ordering something unintentionally the first day I used it. Cancelled the order quickly and turned off ordering via voice (although there is a PIN function, so Amazon have thought about protecting it from being used by unauthorised users). It could be improved by alerting the Alexa app to prompt the purchase before accepting the order.
Again, it's illiterate tech users that don't do their homework and can't set up their products the way they need to secure it. All the docs are there and app is so easy to use.