In fact, Bitcoin ATM are already available in several locations around the world, but if you expect them to be available in all cities, for now this cannot be realized because different regulations in each country and region can affect their availability.
A city is big enough so one Bitcoin ATM per a city is not enough for Bitcoin users and there is huge demand on numbers of available Bitcoin ATMs globally for Bitcoin users to access easily, if you are considering Bitcoin adoption equals to Bitcoin ATM availability. Fortunately, there are many methods to use Bitcoin from storing, broadcasting, using it and Bitcoin ATM is only one of many accessible methods.
As Bitcoin adoption increases and technology advances, the number of Bitcoin ATM will continue to increase as the years go by, but their distribution still varies greatly depending on geographic region and different regulatory rules in different countries.
In my city, there are still no Bitcoin ATM even though there is a technology infrastructure and network that supports their availability, even though I am very curious about the physical form and how to use them, but as long as I can still make Bitcoin transactions safely, their existence is not too important to me.
Even Bitcoin ATMs are available and very easily accessible for me, I would like to use other methods that are more convenient and cheaper as well. So personally, I wish best for Bitcoin ATM adoption growth but I don't feel any inconvenient if there is no Bitcoin ATM around me.