The main reason why people avoid using bitcoin is that they are thinking that it is a scam, that is how some people think about cryptocurrency in our country, even though they haven't tried it yet, they just don't believe that they can have money online, they think that was because of being lack of knowledge, they don't know how can they use it or what can bitcoin do for them.
There is no infrastructure. For example, you have money, and you want to transfer money to your relatives. You need a wallet, and they need a wallet. You need somewhere to exchange the wallets for money. Those to whom you transfer, too, will need to find a place to exchange the bitcoins for cash.
I also encountered this scenario before when I am about to give money to my brother in another country, he doesn't even know things about cryptocurrency so it takes time before I send him money. I just teach him some basics about it.