Source = Occam's razor
If you are a sole unable to interact with any mass in the universe, but still desired to study every planet in the universe, you need to acquire a physical body to do so. They are learning how to control the human race, get us to become technically Advanced, so that we can go amongst the Stars and investigate everything with them inside us driving us like a car.
If you are a sole unable to interact with any mass in the universe, but still desired to study every planet in the universe, you need to acquire a physical body to do so. They are learning how to control the human race, get us to become technically Advanced, so that we can go amongst the Stars and investigate everything with them inside us driving us like a car.