Hey, I still got a rotary dial phone and it still works. AT&T was charging my F-i-L about $2.50 a month rent on it. When he closed down his house, I took all his AT&T phones to the phone company. They didn’t even want the old black beauty back. Couldn’t even be bothered to crush it.
Remember when the phone company charged you for each extension line? Now I have two phones in some rooms.
BTW, you should absolutely have a corded phone (if you have a land line) in case of a power failure.
Landlines were a blessing after hurricane Rita hit us and we had no electricity for three weeks.
I spent my teens running phone lines all over the house.
Then I spent my fourties tearing them off the house.
We have two land line phones left - the kitchen, and my office.
And I would get rid of those, but for the reasons you state. And that three generations of businesses are used to calling them.