For the average homeowner, using a chainsaw isn't part of routine yard maintenance.
That's not to say you won't ever need one.
If you want a saw to help you spruce trees and clean up after storms, get an electric chainsaw. Today, electric chainsaws are nearly as powerful as gas chainsaws, so you won't have to sacrifice cutting quality when you use one. Plus, unlike gas saws, they only run while cutting, making electric chainsaws a very safe choice for operators.