There are a lot of careful drivers in this world, and I'm happy because of that. However, the ones who are not, are the problem, and they are the reasons accidents happen.

Self driving cars won't only help those you mentioned, people with disabilities or old people who cannot drive well because of some disease or because they simply cannot see properly any more, but they will also prevent accidents from happening, especially if the driver will not be able to take control.

I'm not suggesting we should replace everything with technology. However, why let people who cannot be responsible enough do things that will endanger others, when you can simply put technology in charge and maybe avoid future problems?

There may still be accidents and all kind of problems, sure, but if half of those who would normally drive drunk wouldn't be able to, because of a self driving car who wouldn't allow him to do it, then hundreds or even thousands of accidents could avoided.