Just being alive is a risk. I mean, my aunt was ill afterwards, another relative was also ill. We all know that there can be side effects, so if that's the "risk" you're speaking of, you're correct.
I don't care if people have doubts. I don't care if people don't get it. Speculating about the unknown and what impacts it may have 20-30 years down the line is ridiculous though, and not a legitimate excuse. Frankly, pure laziness is a better reason not to get it than ambiguous concerns about the future.