I've had them in the past, which is why I schedule them on a Saturday to recover before work Monday. But now it's Monday so it isn't worth it for me anymore if I'm getting older and prone to longer side effects. This one was shingles. Thankfully the second shot so I'm done. I'll maybe do a flu shot but that's about it. I'm not sure I follow your argument here: You already feel the side effects of the vaccines, so how would you feel if you got sick without the vaccine?