I would never consider training in primary care in a less desirable part of the country to be an insult.
Suffice to say they don't give an award to the med student who becomes the most jaded prick in the shortest amount of time. Well, actually I guess they do. It's called a lifetime of misery.
Idealism may be defined as the cherishing or pursuit of high or noble principles, purposes, goals, etc. Remembering this pursuit can offer protection when you are overworked, underpaid, and your noncompliant patients are dying inside a deeply screwed up health care system. It's not something you cast off in disgust before your ship even leaves port.
Don't look at residents as role models. They are truly in the pits during that phase of their lives, and their attitudes reflect it. Look at individuals who have been in practice for a while, there you can see a divergence between those who have maintained or reconstituted some idealism and those who haven't. I would much rather be in the former camp than the latter.
It's not a wish, just an observation.