Why do you choose to not incorporate the relevant science, psychology, into your perspective? By not doing so, you are coming across as only interested in your own thoughts rather than reality.
Uhmmm... you act as if psychology has somehow hit upon objective standards... that's not the case... also, I think what Bluewing is doing is
exactly what good psychology, which developed from good philosophy, is all about... taking what little we know, making some assumptions (which are NECESSARY, because we aren't capable of starting from self-evident truths), and then trying to develop testable conclusions therefrom.
Additionally, I would recommend that you read some Thomas Kuhn and learn about how the sciences, particularly the 'hard' ones like physics, chemistry, or biology, frequently undergo major revisions and reassessments, in fact, are constantly undergoing revision and reassessment, because we've not yet understood how the world works. One can argue with Kuhn's description of the situation, but he's hit upon something real: "paradigm shifts".
Psychology is not a privileged science, insofar as one needs to learn the table of elements of the psyche or go to grad school to understand the basics of, say, quantum mechanics. Psychology is available to us all...
One can, for instance, very easily, as a layman, discuss with as much specificity and insight as a psychologist whether or not eudaimonism is truly universal, viz. is happiness everyone's ultimate goal? Also, can 'happiness' be satisfactorily defined without resort to other, equally vague concepts? Or is it a primitive value which refers to experience, and thus does not submit to a truly 'scientific' and 'objective' analysis?
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Unfortunately, with the domination of the DSM-IV (and its earlier iterations), psychology in practice often resorts to: feeling depressed? try this pill! (wellbutrin, valium, etc.)...
When it comes to talk therapy, a psychologist/psychiatrist
often serves as little more than an 'objective' but intelligent sounding board... which a good lawyer, or a social worker, or a priest, could possibly do just as well.