I'd also like to know why I can't have a flying car. In both cases, the answer isn't easily explainable. And just because it takes a whole lot of study to understand it, or someone profits from selling, don't make it nefarious.
OK, but can we look at this using science rather than FUDD?
Anti-Vax is rooted in a distrust of authority rather than any scientific evidence or fact. That's my biggest problem with it (well, that, and that's with down right dangerous to all).
If there's a reason to distrust authority, then fine, let's figure out if that distrust is warranted. When you continue to ignore the overwhelming evidence, then your distrust becomes more of a pathological religion, that as we've seen, creeps into all facets of life. (e.g. jet fuel and steel beams)
I've had a variation of this discussion with my doctors on occasion, when discussing potential side effects whether of medication or surgery. Some of them opine that all drugs have side effects but those inherent in their recommendations are minimal
In cases where I consider what they recommend optional, I am likely to tell them that 1 in 1 million is too high a percentage if that 1 turns out to be me. I can lower my odds to zero simply by declining