I'm Drowning in Paper Spam!

Why is it that my VISA bill arrives in an envelope packed with a special offer to buy a watch, "Cardmember Tips" like "Pay on Time", a page of checks offering a reduced rate, advertisements for long distance service, automotive insurance, and more? My bill this month came with 11 pieces of paper, only 10% of it contained the envelope and the bill... and several pieces had my credit card number printed on it, so I had to shred them. I find it phenomenally irritating that 95% of all mail I get is garbage, and even within the mail I need, it's 95% garbage. I'm not some sort of hardcore environmentalist, but I know how often my paper shredder gets emptied, and it's too often.