I have a large family of 6, I have 4 teenagers (two step dc) and 2 younger children.
So my wife cooks for the younger dc, i cook for the teenagers. Dsd is vegan and so usually requires a different meal, dss is very fussy and does not eat red meat or refined carbs so requires a different meal. On mondays, wednesday and fridays some of the dsc do sports in the evenings which require a meal to be heated up. I find myself on an average night cooking from 6:30 to 8:30.
Sorry if this comes across as a big moan.