If you can't afford internet, how are you supposed to go to Panera or Starbucks? It's one thing if it's a choice, but, for instance, a TON of job applications are now totally online.
Not to mention what might happen if you have no transportation!
You don't need to purchase anything in these places although usually I grab a cup of coffee for $2 while I'm there.
If you have no transportation, it gets tougher but you have to get to work somehow so hopefully you are near town/an internet source.