I'm not a sir
My issue is mostly when people totally close themselves off to actually THINKING about things. This is something that has been seen on BOTH sides of the equation (often occurring at opposite extremes of scientists vs clergy). It then takes heroic effort to change the existing dogma. Examples of dogma that changed in Biology:
: The war between chemical and electrical synapses - what they can BOTH exist??
: DNA > RNA > Protein ALWAYS... oh wait retroviruses? prions? damnit
: Marilyn Kozak (cause the woman's viewpoint drives me crazy)
Equally I have issues with people who think they're experts in something but don't really know what the hell they're talking about - which is the most likely thing to encounter on internet forums of course.
I simply wish that people would keep a more open mind about things like holistic medicine. Is some of it garbage? yep Is all of it? no
Want to see me get really pissed off about something? Start talking about the fucking moron parents who don't want to get their kids vaccinated.