Conceptual art : how do I hate thee, let me count the ways

While from time to time you do see something intellectually interesting, challenging and (occasionally) visually interesting in conceptual art, mostly it seems an excuse to avoid real artistic effort, in the case of Hirst much of the work is actually made by an assistant. The not so YBAs have made a lot of money but have they produced anything that will last ? Certainly there are permanence problems with some of Hirsts' pieces and it is hard to imagine much of Emin's early work either keeping (in a literal sense) or being of genuine artistic interest in the future. It may be of historical or sociological interest, little more. Much conceptual art is mimicked by art students who see it as any easy way out of actually learning any real skills, the concept is all. We need a new term for it : it isn't really art, or certainly not visual art, perhaps we can call it part of the performing arts ? Where visual aspects are not pre-eminent ?