A lot of people don't only work on their own code. They have dependencies, they have coworkers, they have to work on code they wrote nine months ago. So it's no

A lot of people don't only work on their own code. They have dependencies, they have coworkers, they have to work on code they wrote nine months ago. So it's not "I need to be forced to use the type checker," it's "everybody needs to be forced to use the type checker."