[user104658]

Medical testing in general is such a huge moral grey area. It tends to be undertaken by single people with few attachments who are in need of the money because it pays so well, but it comes with massive risks of life-long side effects. On the other hand, if no one did it, we wouldn't have even a fraction of the medical advances we have today.

I guess it's an easier choice when it's something like an experimental cancer treatment, or another chronic condition, and you already have that condition. Sort of like a "Well I might as well give it a shot!" ... but something like a vaccine, the whole point is that it has to be tested on healthy adults, which makes it a bit of a Russian Roulette. On top of that they (for obvious reasons) are rushing these vaccines to the human testing phase MUCH faster than they usually would, skipping or accelerating a lot of the "pre-testing" stuff, which makes it even riskier.