Unfortunately lots of people do, so I thought it appropriate to address the other side for very assuming people who absorb one-sided information.
If someone wants to write an article about "the other side" then write something about the users for whom Zynga's products are actually providing value as opposed to serving as artless black-holes of attention and creativity.
Obvious example: http://www.bogost.com/blog/cow_clicker_1.shtml
I think games have incredible (and untapped!) value, but I don't think Zynga makes games. I think Zynga exploits game mechanics to make products out of people.
Positive or not, this industry can lead one to feeling like they have to give every waking hour to the company. At the end of the day, though, one really should ask "what am I getting in return?"
Balance is key.