As someone who ended up in the hospital with chicken pox I sure don't see it as benign. If I could have been vaccinated against it I would have been gladly. Admittedly that makes me VERY bias.
The question though is what constitutes abuse, and who decides that? Some (myself included) would argue that something like a chicken pox party counts as abuse.
Thanks for the detail on vaccination studies though, I found that both informative and interesting. I obviously have more research to do in that area.
The problem is that the risk of a round with chicken pox becoming severe/serious enough to warrant hospitalization is roughly the same risk one has of developing the severe/serious adverse effects of the vaccine. With the chicken pox vax you're not improving your risk of incidence of severe/serious outcomes, you're merely transferring it from the disease to the vax.
Most of the other more commonly administered childhood vaxes have much greater disparities in risk of incidence from the disease than the vax, which makes them--from that standpoint--better vax options than others. I will never vax for the flu for the same reason.