Why did Trump create the Space Force?

"Space Force! It's the sixth branch of our magnificent military. People laughed when I said it, but now they're not laughing. Space is the future, it's the ultimate high ground. We have to protect our satellites, we have to protect our way of life. We're going to Mars, we're going to the Moon, and Space Force is going to lead the way. It's very futuristic, very incredible."