Most people only pay a maid when their time has more value than the maids (in terms of wage) ,so if an engineer is making 20$/hour and has to pay the maid 10$ /hour ,he will prefer to pay the maid and use his time making more money as it is more profitable .
the problem with all of this is not chosing money over time but rather the fact that "the middle class" trade their time for money instead of investing and making their money into an asset.
as Warren Buffet said : "poor people work for money, rich people make their money work for them".