Desktops typically offer more performance for the money than laptops and are less expensive to repair. They may allow for a more ergonomically correct work environment, let you work on a larger screen, and generally come with better speakers.
Chromebooks are based on Google's Chrome operating system. They're generally inexpensive, with some starting as low as $170. They're designed for users willing to work on and store most of their files online.
These days it's not unusual for individuals or families to have more than one type of computer. If you’re looking to carry your computer to work or on vacation, you obviously need a laptop. And some have slimmed down to weigh as little as a couple of pounds.