It doesn't matter because it isn't going to happen. At least not for a long time. We might as well be arguing the pros vs cons of glaciers. .
No but what does happen is the constant shifting in the practice of certain fields, especially psychiatry(others to some degree as well). From the way it's practiced, to the way it's viewed.
Psychiatry practiced in 2012 looks different than the psychiatry practiced in 1990 which looks different than the psychiatry practiced in 1968........And psychiatry in 2034 is going to look different as well(probably the size of change more consistent with 1968 to 1990 than 1990 to 2012)......
and all these things(and how psychiatry will change) is very much related to our training, biological psychiatry vs non-biological psychiatry.
Another thing that is relevant(if a lot of the posters on here are any indication) is how we are viewed by others.....you would have to be living in an igloo to not know that current attitudes towards psychiatry(both in the medical community and especially amongst the professional non-medical community) are not going in a good direction right now. And I'm not talking about scientologists and stuff like that. I'm talking about marcia angell, the whitaker book, all the studies on antidepressants and efficacy, pediatric bipolar d/o, etc.....
Now I'm not a fortune teller....but it is pretty clear the times ahead are not going to be static for psychiatry going forward. There are going to be lots of changes.