The largest issue is that a significant number of these psychologists (I'd like to say most but I haven't done an actual survey to establish percentages) are quacks, pure and simple. I flipped through a lot of the papers or projects when I was visiting my sister for her doctoral graduation and was appalled at what so many of her clinical psychology peers considered good research. A lot of them simply assumed statistical correlation == causation (FALSE!) and I even saw room to question a lot of their statistical correlations. Even worse, after actually meeting her classmates, my simple observation was that they seemed to suffer from "issues" more often or more severely than the general population (sis agreed).

I've had friends who benefited from mental counseling but have all kinds of qualms about regarding it as a "science" and therefore looking to it for cures or preventatives.