Does the thieves guild quest line get less....I don't know, petty? After I was given the first group of tasks I quit because I felt like "I don't know these people. They might be decent hard working people that don't REALLY owe the guild anything." If the quests got a little more noble in scope, or Robbin Hoodish if you will, I won't have as much of a problem.
Nope, they're thieves. Thank god, actually. I couldn't stand the supposedly 'justified' Thieves' Guild in Oblivion, who were steal thieving bastards but were portrayed as noble protectors of those less fortunate.
Thieves AREN'T noble. They steal stuff that others have earned for their own purposes. At least the Skyrim Thieves' Guild has the guts to admit it.
/minor rant