I looked into replacing it with ooma and dropping the landline. I found our cable/Internet/phone bundle would go up about $20 if we dropped the phone for the same service level. We pay $94 for the three and figured the kids will use the phone. They just FaceTime their friends anyway so we are paying less for something we don’t use.
Forgot to add that I’ve got UPSs on the phone/modem/router/switch and car, solar chargers and external batteries for our mobile phones.