A mere win is pretty good. A win-win situation is even better, but a win-win-win resulting from gorgeous flowers that attract hummingbirds and butterflies (and, usually, bees) seems just plain greedy.
When your flower garden attracts hummingbirds and butterflies, the beauty of the garden multiplies. With "flying flowers" like monarchs, swallowtails, calliopes, and ruby-throats flitting around ...