I have a landline too. Keep it in case of power outages and when giving credit card or personal info over the phone. Used to be that cell calls could be intercepted. Not sure if that is still true? Have other phones in the house that have caller ID. Took a “How to protect yourself from fraud and unscrupulous people” class one time and was told not to answer calls from unknown numbers. Told of numerous cases of your voice being recorded and used in dubious situations. Such as the word yes.... to get you on the hook for things. Hard to dispute because it WAS your voice giving permission. Also, interestingly, this election we have had few robocalls. Perhaps because we don’t answer the phone.??