Punny you should ask.
From time to time you might have occasion to paint something. To paint something that is not incredibly fastidious as far as having to put down a bunch of drop cloths or invest in miles of that blue tape that comes in so handy for masking stuff off so you don’t get all sorts of paint on it.
In those occasions you might want to consider getting yourself an electric spray gun to apply that paint.
If you have spent much time trying to paint a fence with a four inch brush or a nine inch roller, along with having to mess with a tray, you will find having a spray gun to do the task one of the best things since sliced bread.
Especially when you are doing large projects the speed at which you can apply paint is nothing short of amazing. You can literally put on 5 gallons of paint in the time it would normally take to apply one. This is especially true if you have a sprayer that will allow you to pull the paint directly from a five gallon bucket.
Not only that but in many cases the quality of the job you can do will actually be superior to what you might expect to accomplish with that trusty brush your daddy taught you to clean.
Nowadays with the advent of more affordable alternatives, the electric paint gun is the tool of choice for professionals and hobbyists alike. No longer do you need to have customers paying you hundreds of dollars for your labor in order to justify buying one of these guns. There are now acceptable options for light use that are well under a hundred dollars, easily affordable for any middle class family, and the time that is saved will make the cost seem like a pittance.
Go out and spend time with the family instead. I guarantee that it will be a much more enjoyable use of your time. Unless you are a masochist, of course. In that case, have at it.