Tank disrespect.

[AlexPayne]

LOL @ read guides and learn all about the game before you play it. Where the hell did the fun in games go? May as well just read about games than play them, if this is the ridiculous route people want to take.

[Mjytresz]

Where the hell did the fun in games go?

I was a big fan of this ideology until about 10 years ago when I stepped into my first party.
There's a lot of fun to be had in games. Reading a guide doesn't make you a professional. Similarly, getting matched with someone who knows nothing of his class or role isn't fun for the 3 other people who are stuck with you. If you're queueing as a DPS, that's a good 10+ minute wait that just went to waste because of an incompetent tank.
I recently started partying with a WAR. Went into my first dungeon with only general experience of tanking in various other games. The results were relatively disastrous. I had no idea how to manage my TP and, as a result, found myself running dry when I needed to OP a pack.
Didn't take more than browsing a guide to learn the basics of TP and a few minutes of practice to effectively use it.

tl;dr if being an idiot is fun for you than do it on your own time