Mostly agree with this. In my heart of hearts I truly believe many problems are best left to be abstractions and not "explored." When you explore your problems, you dwell on them and when you dwell on them, you're often not in a good place.
It is all anecdotal of course but like you, I notice that my friends and family that constantly go to therapy never seem to get better... and often times worse. I don't think its a case of correlation either, I think they've just made a mountain out of molehill.
Now, I do want to say there are _many_ people that absolutely need therapy. I think if you just can't function, you need professional help. That shouldn't be discouraged.