In the simplest form how would it be possible for the price not to rise substantially in the next couple of years?
Diminishing supply + growing exposure + exponential investment + trading options = positive price increase.
I'm not sure why anyone would be concerned about investing in the technology... this is a great time to expand the wallet.
How many will be regretful for not taking advantage of early 2015 pricing?
In an ideal world bitcoin's value should increase as adoption is very likely to keep on rising, but bitcoin seems to be completely unpredictable. We still get small levels of adoption daily and its use is growing yet the price only falls or stagnates.