Well I think a lot of people are not to familiar with this kind of currency and some people not knowing the possibilities with bitcoin doesn't realized yet the importance in having bitcoin!

yup! that is one reason and most of the time that is not the big reason, I think knowledge is needed for people to realized what is the use of bitcoin and how to earn it!

therefore. bitcoin need deployment, so bitcoin will become familiar and needed by everyone to use as currency and investment

Yes I need to agree this. We need some more special campaigns and promotions to take bitcoin to each and every common people of this globe. Unawareness of bitcoin ecosystem is the main stopping for most of the people.

The availability to use it on many different stores locations for the vast majority.

For those who heavily research into Bitcoin are seeing lots of the drama related to the devs and would probably avoid due to uncertainty.

the same things that stopped people from using the internet in 1992.

1. its cludgy. Private companies exist to help (aol then for internet, coinbase now for bitcoin)
2. no need. The internet was niche back then, bitcoin is niche now.

we're still in very early phases of what this technology can do. The main question to ask is whats stopping people from developing on top of bitcoin.

can you blame this way of thinking though?!
in my opinion it is only rational to use something like bitcoin carefully. because first of all you should handle everything, your wallet-your money-your security-spending it,.... and on top of that the price is always moving you can have a lot of money one day and have nothing the next.
that is why i think most people are afraid or at least think twice before using bitcoin.

Bitcoin is connected to black market and others things heavy,that fiat were connected and still but people think they created those coin and is a ponzi thing to steal your money,besides those we may say the oldest people doesnt know work with technology soo they avoid it.The others well they dont wanna to search or know about bitcoin ,as they dont believe on it ,soo lets say that are several reasons to dont use bitcoin but is when you dont care about what may happen tomorrow for me is the same.Bitcoin has bringeg huge investors into it ,the fact it has already 7 years and a value of 400 dollars for 1 btc should make people start to search about it atleast.

Most of the people don't understand it well because of it's complex technology. They haven't ever seen anything like it before.

If we tell them it is very similar to gold than they can easily get what BTC is.

I think people mostly don't know or don't understand what bitcoin is, that's why, as it is said in the thread for newbies - it is an ingenious mathematical technology - and sometimes that can be a little scary for people.