I got my first Moooderna shot and then wondered why. Haven't had another and so far so good....no covid. Used to get a flu shot every year back about 25 years ago and got the flu each and every time so quit taking it too. Haven't had the flu since. Same way with the cortisone shot for a sinus infection. It too made me way worse so no more of those either. Everyone is different and I know what works and what doesn't work for me. And you're right, to each his own but I know a few that have had after effects of taking the covid shots. If I know of a 'few', who all else knows of others?