I noticed the same thing!!! I'm sorry, but if I'm working all day and come home and make dinner, everyone gets what is prepared. That's not to say that I'll make something that only I will eat, but I can't see making special/separate meals. Diets do make it a challenge, but under normal conditions I don't think you would see me cooking separate stuff like that. Gosh - when I was a kid, I ate what everyone else ate. Perhaps less of it, or only certain parts, but I don't ever remember my mother cooking special stuff for me. Maybe it's a generational thing.
I think you may be right on the generational thing! I was raised by two Depression-era women -- grandma & mom, and with that mindset -- you knew you were lucky to have food on the table, period. There were different ways of expressing it -- but I seem to remember my mom's saying (frequently

) 'Like it or lump it!' (i.e., you eat what is put on the table, go hungry or fend for yourself) Of course, because they loved their grandchildren/children -- they tried to make things with universal appeal, but no separate meals, etc.