Earlier quoted context omitted.
I feel reasonably confident my overall health is good enough that if I got COVID it would be OK. The vaccine, while probably fine, seems like more of a wildcard to me. It seems like a low-probability lottery ticket to bad news, whereas COVID seems like a lower-probability lottery ticket to bad news. (Of course, the government may force the issue. I hope not, though. My body, my choice and all that.)
You should be adding up the probability of complications to all your loved ones that you unknowingly spread it to should you get infected, too. (The same reason I usually get a flu shot: it's not that I can't withstand the flu, it's that there are those around me who might not withstand it. I don't want to be responsible for having passed that on to someone.)
It's quite dangerous if a lot people don't get that the covid vaccines also aren't proved (and are unlikely) to contain transmission. Risk is folks think that we will not longer need to care about hygiene, masks, isolation, quarantine and tracing once most people have been vaccinated.