Yes. As a matter of fact I am using a desktop computer right now. Many people like the desktop computers better than laptop computers for various tasks. This tasks can include: Graphic editing, video editing, and for gaming. Some people like desktop computers because they are cheaper (for the same performance) than laptop computers.
Yes, many people still buy desktop computers. They can several advantages over laptops. For instance, they are easier to keep cool, and it is usually easier to replace malfunctioning hardware.