Technical wise photography is perhaps the easiest art. It basically just needs ur eyes to work and u gotta be able to press a button on ur camera. Imho most other arts involve some kind of motor skills and/or body control that u dont just have as an average person.
yeaaaah and is there somebody here who never heard "person X shoots great photos cuz the have a great camera" ??...............................
most people know from school singing or any kind of drawing/sculpting isnt so easy 
I'd agree with this, I dont think I would use easiest art however I think its simply almost everyone has a camera these days, especially by comparison to how many people may have an easle, paint and a canvas around. If you have a phone you have a camera, cars have cameras, roads have cameras but I would say not every photographt is art.