You can be unfit to be a pro classical concert performer, and still enjoy yourself playing. I have native American ancestors, and any experienced teacher could tell when I was ten from my small hands that I was not going to win any classical piano competitions. Yet I enjoyed my piano training, the discipline helped my finger coordination and my ability as a mechanic. Skill at the piano is useful training, to any aspiring surgeon or dentist. I can't do the extreme chord spans in, for example, Pictures at an Exhibition, but in the home my fake version pleases me.