I dumped my landline years ago. Knowing that the primary disasters we are likely to face in my AO will all take out landline infrastructure I opted for cellular coverage. Cell companies can get portable cell towers up in relatively short time.
In the California wildfires, Verizon claims it never lost any coverage areas because they had the cell trucks out there covering the area. Those of you in that area can attest to the veracity of that claim.
VOIP is probably safer and more secure for the home user than standard landline. Anyone with an induction coil can pick up wire communications. VOIP would provide more security than that. Not that i would entrust any really covert communication to any communication device commercially available...