When people give crazy predictions for bitcoin im always very sceptical. Reason being, the mining. It requires a huge amount of money to be spent by new buyers ever day just to just maintain the current price (in order to pay for the cost of mining) ... don't know the current figure but wouldn't be surprised if it was something lik $10million per day.

I believe ethereum currently requires even more money just to maintain he current price (but if they stick to approximating the current reducing payment schedule due to the so called 'ice-age', this will start decreasing more and more).

But the game-changer for ethereum is when they switch to proof of stake (assuming they eventually do!). Just my personal opinion, but I believe that at that point the sky could even be the limit! ;) (Although if something like EOS is successful then that could somewhat dampen things for ethereum long term prices).

Anyway, i'm personally determined to try to be back to holding as much Ethereum as I can in the run up to the switch to proof of stake :) I do not want to miss out on those $10000 prices! ;)