In the future, I am sure that bitcoin will be more popular than traditional banks, but for now, certainly traditional banks more popular.
Because traditional banks are still used by most of the world's population, especially the government strongly supports traditional banks.
So it is very difficult for bitcoin if now it wants to beat the popularity of traditional banks.
This is true that at the moment, traditional banks still is standing above bitcoin. Users of bitcoin are increasing no doubt but the total population using banks is still far higher. Although not many like the banking system because of control but they still have no choice at the current time.
Well, this is also a reason. I would like to point out an additional note.
We can't deny the fact that Bitcoin is not that friendy for popular use. It's still risky for mst people to take responsability for their own money, as Banks avoid this risk fact. At the same time, many actual users of bitcoin, cryptocurrency in general, know less to nothing about the bitcoin protocole and can't wisely handle how they should use it. Not to mention those who beleive that using thus new technology requires the knowledge of the code behind and that it's only dedicated to devs.
I think we still need more time to develop more tools that help people adopt Bitcoin in a considerable large scale .