Take MMR for instance. You have decided through your searching that the studies performed are inadequate and in epidemiological terms they are barking up the wrong tree.
I'm not sure why you say that. I never mentioned MMR, and thought that whole MMR caused autism thing was researched already. I keep trying to point out the obvious fact, MMR, or any other vaccine can not be the cause of autism. It just can't. Too many people get vaccines who never show any sign of autism. I don't think you can even create autism with injections of mercury, even if you tried.
As has been pointed out to you, one cannot morally justify the type of studies you would ideally like to see. You counter this by saying why don't people look at groups who are vaccinated against those who have chosen to remain unvaccinated. The statistical noise generated from such a comparative study would be so much that I doubt adequate conclusions could be drawn from them - there are too many variables and confounders.
I started off by saying compare the two groups. I never suggested experimenting on children. I said experiment on animals. The fact that we have huge populations of people who have obvious differences, one has had a set of vaccines, the other has not, just begs for research.
This kind of research is going on right now with many other factors. It doesn't seem to stop scientist from doing studies. In fact, long term, large scale studies seem to be one of the most valuable tools we have for advancing our understanding.
Because it is mostly data gathering, it is cheap. It can also be reviewed and looked at in many ways. It is far less expensive than a lawsuit. If you pool the companies that profit from vaccines, you have an enormous amount of money as well. With more rolling in each day.
To not do studies is, well, it seems criminal to me.