I like metaphors as much as the next person, and maybe more, but sometimes I get rather literal minded. And when I try to picture what it would look like to have both roots and wings I am baffled. It just doesn't happen in nature. I don't know a single thing, be it animal, vegetable or mineral, that has both roots and wings. Roots keep you in the ground.
Trees have roots, and sunflowers, and tomato plants.
I can even get beyond the plant category if I stretch it a little and think about teeth. Anyone who's had a root canal knows that teeth have roots. But the fact remains that things with roots don't go anywhere. They stay where they start out unless they are removed by force, and if they don't stay firmly attached to their roots, they die. They certainly don't go flying free.