You have not heard soundstage height, depth, expansiveness, envelopement, etc until you heard something like a 5.4.4 or higher 360 reality, atmos, etc rig, i.e., a minimum of 5 bed layer speakers, 4 height speakers and subs. There are specific directivity requirements for a height speaker and so on.
But, the seers with their 2 channels have everything figured out about height, depth, nuance, positioning in space, etc, I bet...Ah... the never ending miracle of those 2 lousy channels...