You largely can restrict yourself to phone calls and postal mail. Aside from ordering from Amazon, my dad largely does. (Albeit in part because my brother and I will do various things for him he can't figure out how to do with just a phone call or letter.) But it's increasingly difficult for a lot of things and is, at a minimum, less convenient.
And, as you say, in business you generally don't really have the option to basically refuse to use a computer for many purposes.
In fairness, paying post-paid bills by check through the mail is still an option for most things. I get most stuff handled automatically and pay most of the rest online through my bank but I still write a fair number of checks either in person or mailed.
You largely can restrict yourself to phone calls and postal mail. Aside from ordering from Amazon, my dad largely does. (Albeit in part because my brother and I will do various things for him he can't figure out how to do with just a phone call or letter.) But it's increasingly difficult for a lot of things and is, at a minimum, less convenient.
And, as you say, in business you generally don't really have the option to basically refuse to use a computer for many purposes.