I agree - I get all these junk mail from AARP (they started sending them when I was in my 30s!) and I just send back the SASE envelope empty.
And, no, I don’t like the taffeta, rough skin - that, along with the neck, can really age a woman.
When something arrives with a prepaid postage return envelope and it’s soliciting soemthing, I just pack all their material up and send it back with a few extra pages of useless bulkmail ... they have to pay extra return postage. Bwahahahaha