They weren't devastated, and have in fact evolved to deal with it.
What's missing, is your understanding that pesticides have caused far more devastation across a greater variety of honeybee species. Varroa mites are a straw man.
The consensus still holds, that pesticides are responsible for the decline: not mites.
Regarding (1): are you trying to say that recent bee losses are related to pesticides and not mites? We might not disagree. The eradication of feral honey bees occurred decades ago. Neonicotinoids were introduced more recently. Clearly there are some feral honey bee colonies today (after all: American beekeepers keep reintroducing new honey bees). If you want to tell me that pesticides are a greater threat to those colonies than the Varroa mites that wiped out all the 90s-vintage honeybees, I'm not going to dispute that.
I don't expect you to be convinced this time, but .. lets see:
http://science.sciencemag.org/content/356/6345/1393
http://www.the-scientist.com/?articles.view/articleNo/49768/...
If all you're saying is that neonicotinoids are bad for honey bees, I don't disagree! My issue is that I don't think it really matters what's bad for honey bees, because it's not like there was a thriving population of wild honey bees for neonicotinoids to ravage: the mites took care of that 2 decades ago.
Glad, also, to hear the bees can bounce back. In my neck of the woods though, it has to be said: there are as many bees as ever, and that is to say: lots. Happy summer!