80% of household budget goes to:

* rent (all the family lives at the house)

*groceries (all the family eats from this)

*utilities like gas or electricity (all the family use utilities)

*Day to day products that soap or cleaning products (all the family benefit from this).

Delegating doing groceries or paying bills from a common budget doesn't mean that the rest of the family doesn't benefit from that spending. In fact, it is a chore, and doing it for the rest of the family is freeing time for the others. That is why Amazon is so successful, by the way. XD

But yes, advertising is really sexist. Also against women.