I think it's something as an economist that you have to end up obsessed with simply because so much of the population is. If you believe in it, you have to prove it can work because so many people obsess over it. If you don't believe in it, you constantly have to debunk it because so much of the population is obsessed with it.
I agree with Chris, although confirmation bias exists and is in everyone, I believe its effects are exaggerated. I was a staunch liberal, but I read a conservative book that was so well-argued that I couldn't in good conscience keep believing what I was believing at that time. I double-checked the research and realized my old views were wrong. If people were ruled by confirmation bias juries wouldn't be swayed, people wouldn't change ideologies, etc.