I still have a land line. It wasn't all that long ago that I had two phone lines at home: one for personal use and the other was a business line that went into my office, with an extension to my workroom in the basement.
These days my cell phone serves as my business line and my personal line, too. I get calls on the land line but I rarely answer it, as most are from corporations that I don't want to talk to or charities asking for money.
It is time to get rid of that last land line. At first it was a useful tool. We could call people from it and they would call us.