I'm the opposite, I don't have a landline.
It means I have control over who gets my phone number, and I don't get all these idiots trying to sell me things.
The downside is that I can't wind up** "Steve" from Bombay by stringing him along and then telling him I'm using Linux when he calls to say there's a problem with my Windows installation.
**Sometimes that goes a little further, it seems that being called a "Bhang-fuelled Dalit" can show that he does have the sort of of command of the English language that would make a sailor blush. Much fun to be had with these con artists.