Most people still find it hard to use a computer let along Bitcoin. Just talking to some of those in their 40s and some of them either A) Don't use the computer for anything but work or B) Most find it too much of a trouble to try to buy it.
Granted, these people struggle to understand much about the Internet like why https is better or that Google isn't the only website in the world. They may see that credit cards and ACH bank transfers are all they need, and don't understand why you would buy Bitcoin to make transactions just for 2% (YMMV) savings. I think it comes down to a lack of education.
This in turn leads to less adoption by outsiders. I've had people ask me about Bitcoin or the basics and they are in their mid 20s or early 30s. Some want to learn more, but tend not to find the resources available for their questions. I recently pointed someone to the Coindesk beginners guide since they seemed to not know much about Bitcoins, and had a thinking that it was like "Bean babies" or "tulips." As if you can transfer tulips with great ease and little fees.
Then you have your extremists. I've dealt with these on Twitter and Godlikeproductions a few times before. They are the ones always shouting "ponzi scheme" and talk about how we are all in it for ourselves. Kind of hard to quantify Bitcoin as a ponzi since there is no central authority in a decentralized coin. Unlike the dollar which is printed at will by the Federal Reserve.
Any analysis is pure speculation, and that is the only reason you can make a profit on trading.
When everyone is expecting for bitcoin to go up, but there is no undeniable support to stop it from plummeting when someone drops considerable amount,
it is a gateway for large holders to manipulate by dumping, and rebuying in the resulting panic selloff.
The way i see it 90% of the market change is manipulated, and the safest bet is only long term holding.