i think the major prob. with btc is the non stable rate of btc . 1 day it is 300 and other 450 this is the major prob
thats why people very scared to invest in btc these days the price is much stable than the starting time
if the price come more stable it is come more relible to people to invest and it come more popular
yes the prices are volatile and also the low rate is one of the biggest problems bitcoin in my opinion.
because maybe if the price is stable at high price, it will be something extraordinary