because you don't shoot the messenger... I don't think it should be the task of the mail delivery service to decide what you should receive

Sadly USPS is frequently the perpetrator.

https://www.usps.com/business/every-door-direct-mail.htm

I’ve tried every opt-out I can find and it still doesn’t stop.

It's been 20 years now, but I tried opting out of a prolific grocery coupon mass mailer. But the carrier was so used to everyone getting them that I just got the ones addressed to my neighbor.

What I despise is the old marketing materials that portrayed the letter carriers as American heroes because they deliver stuff. Yet the vast majority of what they deliver is ads.

Yeah one of the biggest (if not the biggest) sources of paper that I throw away is junk mail. I throw away bags of it every month, 98% of it unopened. The environmental impact of the paper, the printing, the fuel burned to deliver it, must dwarf the impact of the single-use plastic bags I get at the supermarket.

They get to send each house 30 lbs of crap per year at tremendous discount, but if you want to send a Christmas card to Grandma, you have to pay full price.

That's not true at all. It's class mail is delivered at extreme discount, subsidized by spam.

I wish they would ban mixed media envelopes. So sick of ripping off the plastic windows on junk mail so I can recycle it, it's a such a waste of time and resources.