This will give you some insight, why most of us do not wish to have a dungeon finder.
/Edit: Also you might want to check out the whole thread I linked for generally more information.
I agree most of the argument towards dungeon-finder,but my point is ; this no retail so we wont have any population near to it had.If we could have 2k players online at raid hours it will be the heaven for us.Another point is; if someone did not have any pve problems during vanilla there was 2 options
a)member of a Hardcore Raiding Guild
b)Lies
i wasted too much time for a simple MC run trying to find members,replace bad/disconnected/afk players.Come on now,the first thing you experience (in general) leaves a mark on you which seems the only right option/thing to do until a better way emerges.Why dont we use the system while defining it again on the way and implement it if it will cause a better playing experience?