My mood too has been affected by some nasty trolls in dungeon. I usually just leave ... :/
What can I say? I'm playing to have a good time not be yelled at for not being godlike perfection.

That being said..I still prefer the dungeons to help level.
There are a few gaps where is will become necessary to hook up with random fate groups. Those times will be when you have reached the limit of the log book and still have 3-4 levels before your next guild quest.
Work on getting your next grand company promotion... You get a new set of logs and quests when you become sergeant 3rd class