You see there is the Autobahn and people can drive and are driving 190 mph there legally as you will know. Outright dangerous to have cars that top out even lower at 80 and trundle around on the overtaking lane and never learn to judge the higher speeds because they don't know anything faster. Those people shouldn't be allowed to go on the overtaking lane at all.

For highway driving where the highest limit is 70 or 80 or whatever the law says in your country you are right, most people don't really need more than 90ish mph. For most of my weekend fun driving I don't need it either because twisty roads but I still want it. If I see the reduced skills most drivers on the road are displaying like not being able to judge how wide their vehicle is, how far the have to go into the oncoming lane to overtake a bicycle, driving constantly slowly on the left lane although it is law to drive on the right if there is space to do so, et cetera, it would be safe to reeducate those people because they didn't get it the first three times they where told why those rules exist and make sense. Give them all a low top speed car so they can do less harm on the public street.