If we truly want mass adoption for Bitcoin, we have to wait for about 20 years. Why? Because of old people who have money stored in fiat all over the world.
Let's stop talking about better technology, anonymity, security and all other things. The majority of people in the world don't even care how Visa or Mastercard work. Let's talk about usefulness and trustfulness.
To build trust Bitcoin needs to stop being so volatile, but how can it be done if it is volatile specifically because people en masse don't trust it? I'm not speaking of the forum members obviously and our likes, I mean people who are not interested in cryptocurrencies just for the crypto aspect of it. I beforehand agree with what you are going to say, that trusting fiat (instead of Bitcoin) is a mistake, a big mistake at that. It is a mistake but try to explain that thing to all these people who honestly believe what their governments are telling them. But without these people wholeheartedly accepting Bitcoin (instead of fiat), the future for it looks pretty grim
It will remain a vehicle for speculation and a tool for shady Internet payments
Everyone knows it that fiat is connected with us as we are living under government which provides us a comfortable life. This life is now more comfortable with the crypto currencies especially with the Bitcoin which make things friction-less. These two are making life easy and we need both in different occasions or you can say occasional need requires these two.