This is yet another huge hype... Unless a person is like my wife and the worse painter in the world and someone who globs on the paint to the point it runs down the wall, door, trim... whatever is being painted- There is nothing wrong with rolling. Sure spraying does lay down a nice smooth surface, but it isn't necessary. Let me restate that, it's not necessary unless the paint application is specifically spray only.Roll. I didn't want to get involved in more tools and learning how to spray. I don't think I'm picky enough to see the difference.
I have always said this and fully stand behind it still... if you can paint a room in your house you can paint a screen.