For everyone in this thread - please do watch this video:
http://www.ted.com/talks/paul_bloom_..._pleasure.html

I think it is exactly relevant to our hobby and this discussion

Excerpt = "Why do we like an original painting better than a forgery? Psychologist Paul Bloom argues that human beings are essentialists -- that our beliefs about the history of an object change how we experience it, not simply as an illusion, but as a deep feature of what pleasure (and pain) is."