sirius said:
It's like saying people who speak French have nothing important to say because I don't speak French!
This is an excellent analogy.
I'm conflicted at times about "art", for exactly the sorts of reasons mentioned above. I feel (at times) like the art world is populated by a bunch of self-important people who think they have deep things to say, but are really just enjoying the echo chamber. I get similarly conflicted about my own work as a mathematician, which is essentially the same thing (only I see it from the other side). But research mathematics, just like contemporary (i.e., research) art, does trickle down in unexpected ways.
It's easy to criticise things like these. I get annoyed whenever I see politician or pundit X decrying the use of public funds to sponsor experiments into gorilla mating patterns, or whatever (or the purchase of a particular piece of conceptual art for a national gallery). It's easy to make these works of science/art sound stupid, but for these individuals to claim that these works have no merit is extreme hubris. There are some cases in which non-experts (in fact, even the experts) are just not going to have any idea of the impact that certain explorations will have. Non-experts often don't realise the impact of something, even if the impact is felt every day of their lives. My own area of research in mathematics could have been convincingly criticized as completely useless sixty or seventy years ago. Today, it is the keystone that makes secure communication possible. Without it, there would be no ebay, no paypal, no credit cards, no atm machines. The world of finance would operate as it did in the 19th century (hmm... that's starting to sound good...).
I don't have similar examples of "out-there" contemporary art trickling down into the "know-your-audience" world of art, but I'm going to assume that this is due to my ignorance (the only reasonable response).
As for the art world being dominated by people who are just interested in making money... My Philosophy of Art prof, back in undergrad, used to remind us that 95% or everything is crap. If you're going to criticise something, criticise the top 5% (otherwise you're just going at a straw man). Maybe the art world is partially driven by the need to make money, but that can't be the main motivation for many people. I think there are easier ways to make way more money.