I had to make a rule several years ago. If a bill comes in that is not a regular household bill and looks like it belongs to one of us - don't automatically pay the bill - talk to the other person first! DH paid a subscription renewal that I had already paid.
With so much on the internet these days, I don't subscribe any more. DH does and I always check with him. I have tried to talk him into going digital on his Analog but he likes getting the magazine.
I'm also of the mind that if there is something in a magazine that I want, that I will just pay the newstand price and get just the one copy.
And I have also had a very horrible experience with a magazine - I guess they aren't too smart - it's just bad PR to tick off a customer. Marketing 101 teaches that a happy customer might tell 5 or 6 people about their good experience, but an unhappy customer just won't shut up!