Really nice rejection letters

I got a journal rejection letter earlier this week. It was not for one of the submissions that I've blogged about before. Even though the editor rejected the article, I have to say that it was the nicest and most supportive rejection letter that I've ever gotten. I've reviewed stuff for him before, and that may have something to do with it. Or he may just write like that. Either way, I appreciated the letter even though I'm disappointed about the result.

By the way, this is the fourth rejection that I've gotten at this journal. I'm 0-4, yet I still get asked to review submissions. How is it that I'm good enough to review articles but not to publish them?