I did it years ago. I never noticed any retaliation, but the lack of garage in my mailbox is noticeable. I swear some of those credit cards would send daily letters!
Sure, vendors who already have my information still send me things, but I just call them and get them to remove me from the list. Now the only thing that remains is the political junk mail you can do nothing about.
The gay apocalypse? The cockpocalypse!
That’s way more fun than zombies!