Either bitcoin will be worth a fortune in 10 years or it will be worth nothing. Either way, low risk/extremely high reward.
actually there are lots of other possibilities. two examples are:
- bitcoin price can stay the same.
- or my favorite favorite which i think will happen, is that price will rise slowly the same way it has been rising for the past 3 years and continue on rising this way, in that case it will be worth a lot but not a fortune.
Bitcoin ATM's are only increasing worldwide..... that might be the easiest method for attracting new "clients"
as my top comment said, ATM machines are not exactly the best way of buying/selling bitcoin and in my opinion it has no effect on bitcoin's adoption since people would have no need for an ATM machine if the shops accept bitcoin directly.
i like your examples, but i think for number one, bitcoin price is not stay the same, it will be up and down since there is many new people will join in bitcoin industry and the price will be rise slowly like your examples number two. because i see on now situations, the price is always gets down after gets higher. there will be mass adopting in future and this is the chance for bitcoin to increase more in value and people will be thinking for using bitcoin as their new investment.
the second think that maybe happen is more country will accepting bitcoin like what japan did in yesterday, and this mean bitcoin will become famous than before and we see there is more shop online or offline that will accepting bitcoin for the payment.