People who like Bill Gates believe it is a bad idea to volunteer your time. If you can earn $60 an hour, you should earn that $60 doing whatever you have to do

People who like Bill Gates believe it is a bad idea to volunteer your time. If you can earn $60 an hour, you should earn that $60 doing whatever you have to do so thus way you can later pay for four hours at $15. I don't know. I mean it looks better than earning that $60 and not putting towards a charity?