I never said your mom was useless, or that people as rich as her were useless of people like hobbies like tennis were useless.
Do you not think that adults should do work whether it's in or outside the home? I don't think it's a socioeconomic thing but from my view point work has important functions. For most people it's necessary to live but also it is attached to a certain amount of skill and dedication and therefore self worth and pride in a job well done.
I'm not seeing how there would be anything offensive in thinking people shouldn't just sit around and let others cater to them. And before you jump on me, let me be clear that isn't a reference to Mrs. Buiscuit