Because funding private endevours such as art is not the role of government. Government exists to preserve your rights, not to provide you with art.
Really? Says who? Government exists to serve the purposes that its people decide it should. You sell it short.
And let's just consider that your statement
is entirely true. If it were actually carried out, we would likely not have the NFL, the NBA, or the MLB. Who pays for collegiate athletic programs? State funding. Who pays USC's football coach an exorbitant salary each year? Taxpayers.
But let's take that further. Why not remove mathematics? Why not remove social sciences, political sciences, etc.... and better yet the study of
business from government funding? Because the arts are a part of academia, and funded by the state and federal governments the same as any other field you are hypocritically choosing to keep under the umbrella of governmental provision.
Again, this idea that art as being by nature concerned with commercial appeal, and existing as among some national collective of private entrepreneurs is a false one. It exists primarily in an academic context where it is pursued for intellectual reasons, not reasons of commercial value. If you cut funding for the arts you take people's jobs away, and you remove what remaining threads of academic and artistic culture this pathetic society has left.
If arts should not be funded by taxpayers, neither should business administration studies, cellular biology, sociology, etc., etc....
Precisely the opposite. Art has so MUCH value to society that it does not need government assistance.
I'm afraid you are again mistaken. Artists are struggling more than ever in today's society. Very few artists can survive on art alone, and that number dwindles exponentially when it is concerning artists who pursue art "for art's sake", rather than for a commercial endeavour (see the AA logo).
Movies, music, graphic design, television, video games imagery, pornography, dancing, orchestra, ballet (the combination of the two), opera, comedy, architecture, trade dress, fashion... all of these forms of art are alive and well with private funding.
Again, while this sounds like a valid argument, it is by the majority only applicable to specifically commercially-oriented forms. It's easy to see when you look at the most successful movies of the past year. Mission Impossible? Quite a different film in comparison to just about anything at Sundance. Graphic design? Again, art that is only allowed to survive based on commercial appeal.
Opera? I'm afraid that opera is rushing toward extinction along with a huge number of philharmonic orchestras. Any amount of research will show this immediately.
Dress, fashion? These are things that could easily be picked apart as lacking in artistic aesthetic at the plundering of television and commercial propaganda. They certainly aren't by and large created artistically, for art's sake.
You know what doesn't (usually) sell? Art for its own sake. The famous photograph "Piss Christ", for example:
http://en.wikipedia.org/wiki/Piss_Christ
This was funded by US tax dollars. It's a photograph of a crucifix submerged in urine. That's the kind of artwork that doesn't sell on its own, it needs a buyer who doesn't care what artwork is being produced, it needs a funding source that funds for the sake of funding.
This kind of thing is however a rarity, but the right wing uses it as a poster child for their own interests. The majority of artists in the field today are interested in collaborations with other artists and the pursuit of producing something relevant to society. Do certain things slip through the cracks? Yes. But this pales in comparison to the wastefulness of war, for example. It's a non-issue.
Are we better off for it? Doesn't matter. Is it our government's responsibility to prop up artists who don't find a place for their art in the vast array of commercial opportunities for artists? No.
I disagree. Again, one example of poor artistic decision making does not speak for the national community of artists as a whole. It absolutely does not suffice as an accurate representation of the goings on of the diverse community of artists we have here.
And yes, we are better off because of people pursuing art for art's sake. People who are disinterested in these things are worse off.
Far more concerning is the fixation with materialism in this country. Ask the same question of materialism: do we need it? They would like you to think so. They want you to create an identity for yourselves through the products you purchase, rather than through the pursuit of your own thinking.