This doesn't necessarily apply solely to gamers, but I just can't stand fanboys who somehow manage to assume that fanboyism/unreasonable behavior applies to only themselves and nobody else. Speaking as someone who's gone from 360 to PS3, and dabbled in computer gameplay, I can safely say there are jerks in the Interwebs. Might be Sony jerks, might be Microsoft jerks, might be neutral jerks, but everyone has them, and everyone has fanboys. And yet there are people who have decided that their side simply can do no wrong, that everything it says or does is reasonable and right, and the opponent is where all the idiots lurk.
Then there was the denial. Before Microsoft reversed its decision, I was spending a lot of time on the Xbox forums; the atmosphere there was very hostile, with anyone expressing serious doubts or complaints about the policies basically being told 'Shut up, go away, future of gaming, yada yada.' The thing is, I knew that if Microsoft's policies were going to savagely, insanely cut down its potential install base, even if people hadn't been leaving in droves out of outrage alone. If these pompous idiots rambling about how Xbox One was going to 'Change gaming forever,' the console would launch with so few sales it wouldn't be able to do much of anything future-y. So I tried to convince them things were grim for the console, that every customer was needed.
Nope. Talking to a brick #*$&$% wall. I showed them a half dozen polls, showed them that the One trailed behind in every single pre-order market's overall 2013 sales (In the Amazon U.K. list, the PS4 was at slot four. The One was at slot SEVENTY.) I explained that they had taken a global market, shrunk it to twenty-one countries, shrunk it down to those with Internet access, shrunk it FURTHER to those with GOOD Internet access, and ticked off half of what was left. The company, the community, needed their money if the console was going to stay afloat. (Should mention, was only doing this because I didn't want Sony to get a monopoly; wouldn't want either company to have one.)
"Oh, Sony fanboys posted in that poll. Pffft, pre-orders mean nothing."
Now, I can understand that not everything on the Internet is true, and all things should be taken with a grain of salt, but when every poll in existence, every pre-order list, every scrap of evidence points to something, you'd have to be insanely self-absorbed not to examine the possibility.
One woman outright mocked me for 'wasting my time looking at stupid pre-orders.' This was the day before Microsoft reversed its policies. Boy, did I GLOAT at her after that happened.