Everyone has their own opinion. As a long time life member of Good Sam, I have received Trailer life for years. I have enjoyed every one as does my wife. I admit that most of the time there is at least one informative article in each issue, usually more than one.
For example this month, the March Issue, there are four articles about places that are very interesting to see and visit, one good story about improving/modifying the RV (there is one of these every month), along with the regular "Department" sections among the 122 pages that always have bits of valuable information.
I am a little puzzled about the "junk mail" comments. In all the years that we have received Trailer Life I don't remember getting excessive junk mail as a result. Perhaps others have a different perspective.