I suppose I could see Bitcoin getting further to "the people" by having more ATMs offer it as a "convenience" for users, and getting a wider audience. That might help further its adoption.
The reality is that there are still many businesses and shops that don't accept anything else but cash. Food markets are the prime example. Even credit cards aren't always practical, so people have to carry cash with them. There will always be a need for ATMs as long as cash is in circulation and money doesn't become completely digital. I think there will come a time when all ATMs include a crypto exchange.