I've been keeping bees since the early 70's when I bought my first bees and equipment from the Sears catalog. Then Varroa came in the 80's and nothing, including Apistan, seemed to work, everything died.
What inspired me to return to beekeeping is that I quite literally walked away from my apiary back in the 80's. I piled all the dead hives into a big mound of equipment and abandoned it all in a field on some family property. It sat there through the 90's until one day I decided to burn the pile. That's when I noticed that feral bees had moved into the rotting hive bodies and were thriving. My first thought was, maybe I was the problem because the bees seem to be doing okay by themselves, so I thought I'd give it another try.
My thought process on the topic is that I know NOTHING about beekeeping, For the past couple years I've started to locate and read beekeeping books and publications which pre-date 1900. I've noticed we beekeepers keep reinventing the wheel. For example, there is an article in the Feb 09 issue of Bee Culture magazine about a new idea of weighing colonies to map growth. Guess what? That new idea was first posted in the Oct 1 1899 issue of Bee Culture magazine. I also ask lots of questions I think I know the answers to. The 101 area is my favorite place here on bee source. Doing so has resulted in changing how I view beekeeping. I just assume everything I know is wrong because it typically is. I've also come to believe that many of the "experts" have it wrong too.