Here’s the problem: Who has time to wade through file after file? If you’re like most people, you probably have better things to do. You should go through your files from time to time to clear away things that may be bogging it down. Although Macs are among the best computers out there, they are not immune to losing speed or to becoming infected by viruses. This means that you need it to be in top condition at all times. Like any Mac user, you probably rely heavily on your device.