Should I give up my landline?

It seems like all I’m getting on it are robo-calls and appeals and that is several times a day. My son also uses it when he calls from Paris but he could call my cell. There were times during Sandy when the cell phone didn’t work and the landline did which is why I cling to it. Any thoughts? Particularly would like to hear from people who know the technology; I do know many people only have cell service.