It keeps you local to family.
Although my new job required me to get a Maryland number when I relocated from Ohio so it’s a moot point for me.
My wife still has a MA cell number though and she moved from there several years ago.
“It keeps you local to family.”
Yep, two years ago a buddy of mine moved three area codes away across the state and still has his nextel # from home.
I would dare say in most situations like this, the cost of adding a 2nd cell phone line just for that purpose is much less than getting a landline.