I don't think BTC price volatility is the primary cause for not using it. But based on my knowledge as of now bitcoins are not accepted by many governments because they can't track the transactions and can't put taxes on to it so many businesses are not taking it as a payment method. Currently, bitcoins are used mostly in online gambling and for some limited online activities.

It is true and even if they will use internet but with less attraction with bitcoin they would not be interested in using it, we need to expound to them the real value of using bitcoin and we should start it with our family and relatives.

The last month bitcoin price has stabled. I hope it will stay thst way or increase slowly without bubble building.
Without the big volatility it would attract even mor merchants!

When some portion of people do not have access to Internet then bitcoin has nothing to do with them. Even for mobile payments you must have Internet access. So, the primary eligibility to adopt bitcoin, you must have Internet access. But I agree we need more projects to spread out bitcoin to more new people to make them adopt bitcoin system.

Hmzz, this is something often taking place and will continue to happen if there are people who have very high levels of giving up easily. In the economy there is no word of surrender which will win, that there is who hold the appeal and keep trying he was a winner and will be awarded the prize that is a terrific success.

The price volatility of bitcoin is a concern for the merchants to accept bitcoin payments. When they are accepting bitcoin payments and if the price of bitcoin get lowered then they might incur losses. Also, the pending approvals from the government is a big concern for many people, and they are still waiting for any view from their government to start using bitcoins.

There are in fact quite a bit sites where you can spend your coins online, and it's only spreading. However, the issue here is that people want to spend their coins locally in stores where they can buy their daily needs. I am quite sure that when local stores are adding Bitcoin as payment tool that much more people are willing to spend their coins.

Well you are right the government has a big role in bitcoin industry. If the government ban bitcoins in their country then that country's citizen will not use bitcoins.

Possibly if the government promotes the use of bitcoin there are no more hindrance to the increase of bitcoins economy.

Obviously.
Normal people (non-technical i mean) usually likes to use just the things that are available in their daily lives, why would they like to use something that is hardly spendable around them or if there is no place accepting it no one would take any interest in it.

For me the main reason people wouldn't use bitcoin is that it's not really prevalent enough to force people to switch away from cash. Not enough actual physical shops take bitcoin yet - at least not near where I live. Businesses accepting bitcoin is still the exception, not the norm. Until it becomes standard that a shop or business takes bitcoin, people won't switch in huge numbers. Another factor is definitely that people don't trust new technology - they feel a familiar security in owning a physical paper banknote, rather than a bitcoin wallet which has less of a physical, tangible aspect, even a physical hardware wallet.