Interesting responses, and I agree, they are both capable of providing an engaging and immersive experience. Fortunately it isn’t necessary to eliminate either one of them. But they ARE different, stereo is channel based and atmos is object based. The limitation of atmos is having to use so many speakers but for people who already have home theaters it is easy to try. If you subscribe to apple music or tidal atmos music comes with your subscription so it isn’t necessary to buy a bunch of blue rays or SACD. I don’t think this format will die out the way "surround" music has withered. The mixing engineers are creating new content constantly.