You need to get some perspective. If you aren't doing a pre-formed group, you shouldn't expect more than getting through the dungeon with minimal or no deaths. You shouldn't expect a speed run or aggressive play. When you get to 60 and are repeatedly doing level 60 dungeons where everyone appears to be overgeared, then you can expect more, but not before then.

As a healer / tank coming back to the game, I haven't played my classes in over six months. I swap jobs depending on what I feel like running. I have randoms all day long in different dungeons, some are first timers to the dungeon, sometimes it is a pre-formed group just missing one party slot. Its a crap shoot and I only expect people to be civil and helpful if someone says it is their first time or they aren't sure what to do on a boss, etc.