I think you underestimate how debilitating some disorders can be and the assistance a dog can give. If a person is unable to get a coffee without an assistance

I think you underestimate how debilitating some disorders can be and the assistance a dog can give. If a person is unable to get a coffee without an assistance dog, and the dog is properly trained, why would you want to rob them of participating in a normal life? Something being "just" for you, does not mean this holds for everyone.