Because making it not look like an unreal engine game requires an entire technical art department. Absolutely possible, but there's waay too many dials to play with.
You see I read the Wikipedia page about aerodynamics so I know what is and isn't physically possible with our current technology. That's how I know this blurry photo of a paper plate with LEDs is actually an alien. Also bees are aliens because even though they can't fly they fly.
I know it's not that deep but if you type a whole ass paragraph in all caps I want to beat you with a shoe.