I do appreciate the additional optimization opportunities that derive from the fact that user defined types can be used as values and not just references like i

I do appreciate the additional optimization opportunities that derive from the fact that user defined types can be used as values and not just references like in Java. That's very important for memory usage. But the complexity that comes with it is undeniable. It's not just one exception that is confusing. The whole business with nil interface values versus non-nil interface values that contain nil pointers is not exactly pretty. It is consistent though.