I have a guess as to why this is, aside from what's already been said--
This place is kind of an escape for many iNtuitives. Since we're a minority in the real world (about 25-30% of the population), we constantly have to live and work in the Sensory world, which is not our natural playing field.
I am mocked by Sensing friends, family and co-workers in real life constantly for not being attuned to my physical surroundings and the realistic details of the here and now. And since 70-75% of people are Sensors, this is perfectly acceptable in common practice. "LOL look at the stupid NP that can't remember to tie his shoes or put gas in his car."
And that's perfectly okay, because most people really do find that to be stupid. Yet when I mock someone for lacking iNtuitive abilities, now suddenly I'm an asshole. Why would you expect anyone to understand that shit? Making fun of people for not grasping abstract intuitive systems, wow, what a fucking dick!
The attitude I get constantly is something to the effect of, "If you're so smart as to understand all this hypothetical bullshit, how can you be so stupid as to not understand basic rules of common courtesy? You must intentionally be an asshole!"
And without fail, the only people that understand what this is like are other Ns. We don't want to live in the real, tactile, Sensing world most of the time, but we have to, and we're tired of getting shit for not understanding it as well, so we gather here to talk shit about you. That's pretty much it.