Just like ACs, fridges, washing machines, internet and a bunch of other things are "made-up preferences" too. In the end, does it really matter why or how the preference appears? If people are willing to have a personal assistant for 100/month, rather than 400/month, what difference does it make to you? Because you didn't get it at 400/month, you shouldn't want to get it at any price, because you don't really need it?