Well this certainly stirred the pot, didn't it? Although it doesn't take much on this forum to get people going, I think a lot of people are making valid points.
As much as I respect everyone's opinion on the matter, I just can't feel bad for my 'perma-tourist' status. I knew I wasn't going to stay in Argentina long term, so why waste my time with the hassle of trying to get a DNI that would never serve me anyway? And for all I know there is a quota of DNIs given to foreign residents - why take that from someone else?
I exited and re-entered the country every 3 months until it seemed silly to do so if I could just pay the 300 pesos upon exiting. In my mind this was fair and balanced to everyone: instead of Buquebus getting my money, the government of Argentina got it, much like a 'tax' that I clearly had been evading as a perma-tourist.
Also, I did not go to the doctor once, or otherwise make a burden of myself on any national system. But I paid U.S. taxes the entire time I was gone, supporting 'illegals' there who need emergency health care and glad to do it. I mean, really: does a handful of foreigners using the health care system raise your personal taxes as much as a single peso? It's a drop in the bucket and there are much worse things to get upset about.
I did not take employment from the locals. I earned dollars that I injected directly into the Argentinean economy. I ate out, shopped, traveled, and supported the local arts scene. I easily put 10k into businesses in 6 months' time, and I don't think any of them would have complained about my residency status.
I know that not all of us fit into these circumstances, but a lot of us do. There are tons of people that earn elsewhere and spend in Argentina. So, at the very least, we should balance out the others who come to work locally, the majority of whom head straight back to their home countries within a year.