I can't argue with taking an objective approach. And it's perfectly fair to call these lists at least partially subjective, since the criteria by which these lists rank countries are not entirely scientific in nature, but dependent on the rankers' perception of what most closely resembles the correct state. On that note, however, they do mostly base their rankings off some, perhaps rough, objective quantification. For instance,
regarding one such list ranking quality of life:
I'm sure it wouldn't be difficult to scrutinise their choice of grading criteria, but I wouldn't consider it poorly thought out. I would, personally, also refrain from equating it (the intent, process, effect, data) with propaganda, unless I can clearly identify some bias. For instance, the QoL list quoted above resulted from a partnership between BAV Group and Wharton School of the University of Pennsylvania, neither of which I could reliably accuse of any sort of bias, knowing the results. Furthermore, I haven't seen major discrepancies when comparing different QoL lists created by other universities, groups or partnerships. Some level of reputability can therefore be assigned to their efforts. Which does not by any means discredit any criticism to its perceived accuracy, but may serve as a rebuttal against assumptions of inherent bias.
As to the overall point you're making (that a nation's fictitious image is often used in order to obscure the more repellent, distressing realities of life, which are nonetheless undeniably present and symptomatic of ignored problems), I absolutely agree. Governments and the citizenry alike, sometimes unconsciously, invest great effort in perpetuating the misleading image (and an atmosphere decrying dissent of thought -- again, sometime unconsciously) originally created to distort reality.
So if, in this post or a previous post, I'm devaluing your experience or greater appreciation for this topic, it's unintentional. I just wanted to make the point that, relative to the rest, some countries tend to perform more competently when attempting to resolve issues facing it. Then again, I cannot speak unequivocally.