When does ‘stuff’ become art and do you need ‘Bi-polar’ to become a famous artist?

All this ‘found-object’ art, white rooms with lights going on and off and boxes of fog, what is this all about? When do these everyday things become art? Is it just artists loosening their bowels and giving us a modern version of the ‘Emperors New Clothes’ or am I missing something? Some of this new stuff isnt even thought provoking! That is bad.
Also, all these artists seem to have a history of mental illness, or even play on a documented case of ‘Bi-polar’ or OCD or something or other. Is this just attention seeking or does it make them a better artist?

Either you’ve come across some really bad art or you are taking it at complete face value, and in many cases the stuff is the result or part of a long development process.

Why shouldn’t everyday things be art? Marcel Duchamps took a urinal and called it a fountain, and everyone so admired his neck that they went along with it. Art is having neck, basically. No more being shy and retiring!

However, I am still of the opinion that beauty can be part of art, but I also like images or objects that challenge, connote, make you come back and look at them again. The likes of Damien Hirst are considered brilliant (think neck) but at the end of the day who could live with some of the stuff he does?