DF zombies.

[Phe]

But back to the OP, I am guilty of this too. I just run the DF to get my cap done. I have no interest in talking with random people that I am going to spend at the max 30 mins with and probably never see again. Plus, I am probably talking to one of my LSs or my FC.

This.

But also in FFXI, i had random parties going on for 4 hours without saying a word, except
brb, re, wb.
people knew their job and wanted to get XP - end of story.

I think, at least for Expert Roulette there should be an option to go with people from the same server;
maybe there's more willingness for smalltalk when you know the conversation does not have to end with the dungeon,
and that you could actually do something again with those people.