Is Blindness a Real Disadvantage?

After reading the last story in Raymond Carver's Cathedral I got to the conclusion that there are many people that are blind but can see more than people that have their eyesight working. As described in the story the blind-man and bub draw a Cathedral with their eyes closed. At the beginning the "bub" treated the blind-man like with disgust an anger, he didn't want to receive him in his house but at last he had to because of his wife. The transition from hating him to trusting him came because of the knowledge that the blind-man had. He gave "bub" a kind of trust feeling and also gave him sympathy. The blind man was not disadvantaged he could do many things and his mind was very structured and developed so that his blindness didn't cause a problem to him. In life we can also represent this like a metaphor. People that have lost something are the ones that value life the most. People that have suffered and has had to work their whole life to be able to survive are the ones that are more thankful and the ones that people  look to the most. As in this story they use their supposed disadvantages to their advantages and in the case of blind people they develop their other senses and make them more superior as the senses of people that can see. I could also find from this story that we judge people just because of their physical problems and we forget that what is important is the feelings and the quality of person that people are. We must be thankful for what we have since the beginning and not wait for a problem to start to be thankful.