Maybe it's the same part of nature that causes kids to play with the boxes the new toy came in rather than the toy.
George Washington Carver once said, "A weed is just a flower growing in the wrong place." Maybe we feel the flowers we plant are the most beautiful things in the world but the pollinators say "Blah" (at least when we're watching). It doesn't make the plant any less beautiful, and we can't be sure they aren't still being visited.
I have a couple Angel Trumpets (still not blooming yet) that are attracting some little green worm/caterpillar like crazy. The way he is eating, you would think he should be size of a small dragon. He won't touch the stuff growing "wild" on the other side of the fence.
Perhaps we need to expand the saying, "You can lead a horse to water..." to include pollinators and plants!