While celebrities do have to work, most don't have a steady job they have to go to everyday. For example, most celebrities are actors or actress so they can't be filming a different movie every weekday, just whenever they get a part in a new one.
It Could be Going to a Better Cause
People spend a ton of money to pay celebrities, while all over the world there are tons of less fortunate people. According to "Global Homelessness Statistics" there are as many as 1.6 billion people who lack adequate housing while we spend our money on celebrities instead of helping people like them.