Because it's cool and quite a rush!
Well, actually, it is one of the hardest planes to land in the world, if not the hardest. The wingspan is huge, yet it only has landing gear in the center fuselage. It needs to be perfectly aligned in the center of the runway. Just like a bike, When it stops, it actually falls to either side. There is so much lift it doesn't want to land. You need to force it down.
The chase car is constantly telling the pilot about altitude and centerline and rudder adjustments.
This other video show less than perfect landings and takeoffs of this plane.
BEWARE of the soundtrack Lyrics may be offensive:
Thanks,