It works for some people.
If you work part time, and need to drive a few hours a week, I don't know of a job that will let you start and stop as you please, and set your own hours.
I rode all over Vegas on Lyft a few months back. Every one of the drivers had a nice car, some were high dollar v8 mercedes, Lexus, etc.
They either are doing something right, or they are living above their means to keep luxury items.