Should it be mandatory not sure but I'm leaning towards yes. I've driven 3 different cars now that have it and it has worked well I've been quite amazed by it. For myself I'd rather have it off I love driving and sliding the car around a bit but I've logged 100,000s miles on a variety of vehicles, have been racing for over 8 years and considered my skills quite advanced. I think for 99% of the drivers out there it is most certainly beneficial to them and the other drivers they are on the road with. I would not buy a car where it can't be turned off unless there comes a time where no car has that option then I guess I will be forced too or not buy any more new cars. I really think with how crowded our roads are and the increasing level of inexperienced drivers on the road it would be a positive move to make it mandatory. It's like ABS it works great but everyone was worried at first same thing with airbags, saftey belts, etc...it's resistance to change and technology.