The major obstacle I see is the adoption of technology. Many newbies are losing their coins and that’s not good for the network in the long run although it increases price of bitcoins in circulation. Another thing I would like to bring on board is government’s approach toward bitcoin. If we could not do something to prevent it from being criminal’s currency then not only governments but also rest of the world will not have good point of view towards us. We can always deal with small issues like price fall (just like current one) as we have dealt with it before this.
The bitcoin is still very risky. Not only newbies are losing their bitcoin, but also big exchanges like Bitfinex.
This is not really bitcoins problem here. Of course it can be hacked as long as it is in the internet. There are many who will try to do it but there are ways to prevent it. Bitfinex lost that, the security that they can give for their supporters.
