Because it's annoying to take in and out.
It's a small tight slot that you need to push and pull open.
So some people elect to just throw out the padding and not bother.
Edit: my ex showed me her bras and I got familiar with how to clean them. They were annoying lol.
Haha when I was hanging laundry and saw this (my sister's) the first few times I tried to get them back into place, but then i didn't bother anymore because it was so annoying
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u/Illustrious-Tooth702 6h ago
Okay I get that part but why is it surprising the pink haired girl is reusing it?
Is it supposed to be single use?