Bitcoin is not as popular as the US Dollar. US Dollar has been there for a long time so people have talked about it ever since. Before most of us were born, people already know about US Dollar and it has more value than most currencies.
Bitcoin, on the other hand, is relatively new. As we approach a more and more digital world, Bitcoin is also arising. People are starting to talk about Bitcoin but I don't think it will come to the point that Bitcoin is more popular than US Dollars any time soon. But it will, eventually.
There are a few important aspects to keep in mind.
1- Bitcoin is still relatively new - This shows how much potential growth we can realize.
2- Bitcoin offers people financial freedom - This is something a lot people are looking for in times where trust in banks is very low.
3- Bitcoin is the best online currency - Sending billions of dollars worth of coins instantly for $0.05 in fees, is of course impressive.
I am quite sure that these features will make the average joe more than interested in Bitcoin in the coming years.
That's true, as long as we will do our duty to help bitcoin be popular in the world by promoting bitcoin in online and if possible with our friends and family bitcoin will progress more and more and more people will understand it and basically will adopt bitcoin.