I came across this recently and found the hypothesis quite interesting.
It's an article which goes some way to explaining the reasoning by antivaxers and other irrational actions that go against the science.
People who are risk takers will tend to underestimate the risk. Those who are risk averse will almost always badly overestimate the risk.
Which is pretty much what the article says.
I'm a biker, not only a road rider, but I race too. On the balance of probability I will be seriously injured at some point and if I compared the risk against other sports there is no way I could justify the risk. But I'll be ok it's an emotional decision first, rationalised and risk managed by reason.
I used to be anti-vax, but not so much now. My youngest has Aspergers, and that idiot physician who published stating that vaccines were the cause had me frantic, believing that I caused my son's disability. It was only after he was discredited that I re-evaluated my beliefs. I still believe that infants are getting way too many vaccines compared to their age and immune system abilities. Also, from reading research about the HPV vaccine, my daughter and I decided not to have her get it.