If it's your hobby and like driving 200 km/h, sure please do, on a separate track where it is as safe as possible. But driving it on _public_ roads is inherently dangerous to others. Our society has all kind of rules around protection of others. There are laws and rules around food safety, gun safety, distribution of drugs, hunting, using heavy equipment, operating boats and planes. Often you need a license to do these things.

Noone trains for driving at high speeds in driving school. Also a lot of folks do not understand the relationship between velocity and the time you need to come to a stop. So 120km/h is way better than 200km/h. https://www.youtube.com/watch?v=i3D7XYQExt0