Okay so I admit I get annoyed and say "WTF why would you do that" sometimes. I'm TRYING to be more constructive. So it really bothers me when I say something polite and inoffensive and people get mad and/or mute me, and then go right on doing whatever terrible thing I was trying to gingerly dissuade them from.
So here's an example (from the pirate map). There was an awful lot of derp in this game (some of it mine, granted) but we wound up winning in the end - lots of silly deaths in the start and middle but ultimately we were ahead on forts and at the end we managed to stick together in a group for once and actually won teamfights when it counted. So I can't really complain, but two things happened that bugged me.
First of all, early in the match I noticed our ETC wandering down into the enemy fort in the bottom lane (the one you can walk into if you go below where the merc camp is), run into an Azmo and get killed all while getting hit by the fort's cannon. Baffling. I was pinging retreat but he didn't listen, I said something like "WTF" - okay so that was my fault there, could've been more polite about it. He says "well you just earned an ignore" and that was that. Continued to do silly things for the rest of the match.
So I figure I need to be nicer in chat so people will listen to my chat/pings and not get mad. It's getting into the midgame (16ish?) and I notice Sylvanas is still pushing a lane instead of helping with our teamfights. She hasn't left all match. Sure enough, the enemy notices and 3 of them gank her. I say "Syl stick with the group", and get a reply like "I'm way ahead of you on the board STFU". So I wound up arguing with her all match, which was silly. Should've just rolled my eyes and ignored it.
(And of course she spent the rest of the game solo while we got 4v5ed and then they'd wander over and kill her too whenever they felt like it. Late game we finally grouped up and lo and behold, suddenly we won the teamfight and pushed core and won. /bitching)
Anyway, this has happened in a number of games. I know I sometimes vent frustration into chat and really shouldn't, but even when I'm doing my best to phrase things politely I feel like most of the time people just get mad that I dared to tell them how to play regardless. It's so frustrating.
This is me trying to be nice!