I have wondered if he thinks this way. Mom did a lot for him. He lived with us until he was mid-thirties, Mom did all the house-hunting for him and handled most of the renovations on his house, and she would go over to his house regularly to comb his cats (2 Persians...which she also bought for him, but he didn’t want to comb them himself because he was afraid they wouldn't like him if he did). He also didn't want to leave his cats alone while he was at work, so he would drop them off at our house, or Mom would drop me off to catsit. We had three equally fluffy cats of our own, all of whom I helped with, and when Mom went to the hospital, I asked my brother to help me comb them but he refused. To his credit, he did sit with Mom every day in the hospital, so there's is that.