It does depend on your use of the word 'art', good photography encompasses many different attitudes and subjects, only some of which can be called 'art'.
For me, photography offers more than painting as a medium to express myself. Somehow the photo is always taken as truth, restricted as it where by the reality you see, not by what you can imagine, this adds possibly false authenticity to what is essentially a composed and constructed image manipulated by you, your lens, your position, your framing etc. Its very real, its in the moment, the satisfaction comes from capturing the reality as you imagined it could look
. I find sculpture offers a similar encompassing satisfaction, as does music...