Richard_V:I did not confuse trauma with emotion... but trauma - even unprocessed - could lead to emotions which, controlled or not, could be expressed as art.
When you talk about 'traumatic stuff' of late, to what are you referring out of interest?
Well, I can only talk for the art world myself. But I would say almost 80 -90% of the (popular) work is based on unprocessed trauma. Take Jake & Dinos Chapman's work, some of which characterises manikins of young children with penis's for noses. Damien Hirsts mutilations of animals or the use of their carcasses as a canvas. Tracy Emin is perhaps the most well known, with her Turner Prize winner, called 'My Bed'. A work which was littered with used condoms and empty vodka bottles. She has recently been handed a plum position at the RA as professor of drawing. For someone who openly mocked drawing and painting in the past, I found her placement rather amusing to say the least.
Going back to the post war era we have Francis Bacon, Mark Rothko, Anselm Kiefer and Joseph Beuys to name just a few. Their work is really quite disturbing. Mark Rothko famously commited suicide and of course the last two were German, so I can only imagine some of the stuff they may have witnessed as children of the war themselves. This stuff was the mainstay of contemporary art at the time.
In qualification, it’s not so much that people depict unprocessed trauma itself, so much as it is all too often encouraged. The sort of attitude as Dave described from Arlo Guthrie is all too common. In many ways it encourages artists to explore dysfunction without resolving it. Indeed that they should celebrate dysfunction and wear it as a badge of accomplishment even. I think it’s the assumption that this stuff is ‘raw’ and that by definition it becomes ‘pure’, when depicted artistically. That without it being shocking, traumatic or perverse it will lose value. This really isn't true and at its worst resigns the artist to 'weep in silence'. Since to resolve their dysfunction would be to lose their career or certainly a large part of it potentially.
Of course this is all my opinion, but from my experience of artistic processes and having spent a significant amount of time on personal introspection, I am lead to these conclusions overwhelmingly. Having said that, do check out the work of Andy Goldsworthy, Ansel Adams and Bill Viola. Art that explores some of the more positive sides of humanity and our environment. They do exist, but very often have to work that much harder to get noticed.
Anyway, apologies for my long windedness, you posted about a subject very close to my heart that I am deeply passionate about. 
Want to meet and chat with fellow European fdr board members? Then come join the weekly philosophy skype call. Hosted in the UK & Slovakia, every alternate Saturday evening.. Check my profile for details..