Re: When do you think Bitcoin will hit the value of 1 Million USD?
It started in penies and now is 17k. That's a return of much more then 50.000 times. To come to 1 million USD it need only 50 times of that what we is the value right now. 
I think is probably for the Quantum Computers to be able to crack a private key address before it hits 1M price is more than 5000% it's current value.
$1M BTC in 2027. Or the equivalent spread across several coins if BTC doesn't maintain its dominant position.
If Quantum computers ever get close to being a threat, the BTC community will modify the algorithm to be quantum-resistant.