Using services in general is de facto mandatory in our society. It's like saying that you don't need a bank account. In theory it could fly, but you'd be exclud

Using services in general is de facto mandatory in our society. It's like saying that you don't need a bank account. In theory it could fly, but you'd be excluded from so many things that it's practically impossible. It's even less optional if you are required to use this or that service by your employer (e.g. company-wide Gmail). Going back to the analogy, you don't need to eat in this particular place, but how do you know any one you'd choose does not poison their food? By empty promises alone?