In economics, the only "demand" that is relevant is the demand that reflects itself in a willingness and ability to pay a high price to the supplier.
A homeless bum may "demand" a Porche all day long, screaming his wishes up and down the street, but his desire does not translate into the economic term "demand" until he has the required amount of cash to make the purchase.
Likewise, a woman may jump up and down and say she demands a high-status man, but her desires are worthless unless and until she backs them up with the ability and willingess to pay the required price
Or be worthy.
Ultimately that's what it comes down to. It's ok to be demanding to an extent, but it helps a lot if a person brings something to the table that the other side wants. Plenty of men and women have lots of stuff, but it's not much of what the other party is looking to buy into.
So everybody goes home unsatisfied.