Never. Why pay hundreds of dollars for an exacting replica only to ruin any illusion of reality by attaching a cheap plastic stand to it?
Well the hundreds of dollars part is a clue.....
I think it's clear that inferior, small-peen collectors use stands, while more discerning, well-hung collectors do not.
it's clear that well-hung people don't collect at all and live a full life, while small-peen collectors waste their life playing with dolls because they have no friends.
all photos of "my" collections are fakes, distributed by small-peen lonely enemies.