I have a few family members still getting every booster due to the fact they still want to do things that require them or used to require them. (cruising, flying, theme parks etc) I have tried to talk to them for a few years but have given up. They say they cant understand why there getting sick all the time and me and my wife just shank our head. One of them has had Bells Palsy and the other shingles and now its heart issues. Its just a matter of time before they get a real bad jab but its there life.