I'm sorry, but how can you say that?
I was at a Big 4 Firm recently over summer and was rotated through Audit and Marketing. Audit was boring shit, but so was marketing. At least with Audit, you're compensated with 6 and 7 figure salaries after 5 or so years, and get to go to various companies for field work, even for vac students. Marketing's not bloody designing advertising brochures, its pretty much admin with a whole heap of back breaking work. They also have their own number crunching to do as well. The good thing I'll say about Marketing is the staff in there are usually much better looking.
By nature, no job is not boring, sorry for the crude example, but even if you're a pornstar or something, true the first few times are good, but after you're 5000th movie I'm sure you'll start to get over it
EDIT: I remember that the whole Marketing Dept had to come in on a Sunday to do work during the time I was there as well.
Basically, its a generalisation Marketing is for bludgers
As for the Accountant not being outgoing bit, have you heard of bloody Public Practice? Its client orientated. Basically, by your definition, being a lawyer is not outgoing since the two professions are almost identically structured.