Melon Hunter said:
That some people will use even the most inconsequential things to try and make themselves feel morally superior to you.
That's nothing new: I know people in real life who consider you subhuman for liking music that they don't, and God help you if they can find a 'ism to attach, even tangentially or illogically, to any of your entertainment choices.
As for what I've learned, it's that nobody in a particularly advanced field, like theoretical sciences, or in a particularly advanced branch of their field, like the military, has proffessional obligations and can whittle away their time arguing in 1337 5p34k on the internet. Doctors don't have patients, scientists don't have the limits of human understand to push, and soldiers duties to carry out or wars to fight, all of them have only the internet. Everyone whom you disagree with, and whom you inform of this, is an astronaught or an astrophysicist or Navy SEAL or in possession of an otherwise impressive sounding job title relevant, usually, to the discussion at hand.