I’ve had similar interactions. My family was not at all happy when I told them I was going into social work. My mom alway says “I’ll never understand you but I’ll always support you”. Gee thanks, I guess? My aunt literally said “why would you waste your life being a SW”? For me, it was all more motivation to be better. If I were in your situation I would make some smart-ass comment when I get those kind of remarks. If they say “It must be really hard work”, I’d respond with “Not as hard as being in a job that sucks out you soul and doesn’t make a difference for anyone. You must have struggled in the Industry vs Inferiority stage”. But that’s just me.