I do too, but I suspect both it (and the search screens linked to it) serve the majority of their passengers much better. Certainly it's better than that apparently-random (but not entirely) list of city-pairs they used to send out. While I wouldn't have asked for what they came up with, I think most people (in Ottawa for instance) just want to know what destinations are available from YOW, and maybe (if they're very adventurous) YUL.
I also dislike AA's emails, which are also all HTML.
andrew