You gotta realize, most players do level DPS only, forever and ever. This is like thousand times worse in NA servers, where majority of players abuse any new tanks or healer, forcing them to either quit the game, stop doing any dungeons or end up leveling another DPS jobs which further makes things worse. Next time you go to dungeons, make sure to say good things about your tank and healer, assuming they deserve it, and give them your recommendation.