And to an additional serious point, we've got a landline at our home in OH, only because of the monitored security system we have. My understanding is that the security system won't 'talk' very well with the monitoring center if it's trying to communicate via an internet-based phone line. Not saying it can't be made to work, but the feedback I've gotten is that it's not as reliable as with a landline. We got the least expensive landline option we could get - no options, no frills, no long distance.
If it wasn't for that, I'd ditch our landline.
Bill