I have always worn bangles ever since I can remember, like earrings they are part of my personal style. I wear them stacked, mixed and in no particular order. As they come on and off they find their own place.
I remove them at night, leave them on the dressing table and then muddle them all over again the next day.
They are fun like that; no rules, no reason.
Bangles are collectibles without limit, no age restrictions or body pre-requisites apply.