he certainly has a preference regarding physical appearance. But the wheelchair is essential. He also tried, many years ago, to explain the reason to me but honestly I never really understood what triggers this in his head. For a while I thought he liked the feeling of taking care of things they couldn't do. But it's not like that. Or maybe it is, but only partially. Over the years I've realized that the idea I had formed didn't exactly fit the reality. I've never 100% understood how he experiences it.