Alcohol has destroyed more lives. Capitalism has caused far more destruction. Automobiles have the statistics to support the idea that they are deadly.
Vaccines, while some allergic reactions will happen (and, of course, all medications come with that risk - I just went through a bout of terrible migraines for a couple of weeks while on Risperidone), but Big Macs cause more heart problems than vaccines do allergic reactions. Coca-Cola has played its part in causing more diabetes than vaccines have ruined lives. America, unlike places with no polio vaccine, does not have a problem with polio. I am very thankful and glad for this.
And, if, even if vaccines cause Autism, I don't mind. Actually because of it I am very intelligent, I have natural abilities with art, and I am naturally inclined to insist that something have facts and hard data to back it up rather than going on emotional tangents that are very prone to being wrong. I may struggle socially, but it's more than made up for in other areas. Such as, I did not read the book for my last test, I barely studied for it, but because I done well enough on my last two tests in that class I only needed a D on the test to maintain my overall A for the class, and I got an A on the test anyways.
And having no empathy has freed me from being caught up in the emotion stuff of other people. I may have to work harder at understanding them, and effectively communicating verbally, but someone else's bad day will not get me down.
Actually, being in school has revealed to me why so many with Asperger's claim it is the next step in human evolution.