What makes a USB headset better than an analog headset?
The main advantage of a USB headset is its connector, which allows the device to bypass the soundcard on your computer. Instead of processing the audio that the headset's microphone picks up in the soundcard, the USB headset does the job of creating a higher quality of sound without unnecessary noise.
Meanwhile, an analog headset highly depends on the computer's soundcard to process its audio input. The quality of the soundcard can also affect the quality of the audio input (have more static, background noise, hissing, etc.) compared to a USB headset that eliminates most if not all unwanted sounds.
What should you use a USB headset for?
USB headsets are often used in gaming since they provide better sound quality which, in turn, makes the gameplay more enjoyable. Those that have bulky earmuffs and thick foams are usually used for this purpose since they are more comfortable to wear for long hours of gaming.
However, there are USB headsets that can also be used for business or work settings. Mono headsets are among the most popular choice for this purpose since they offer excellent audio while also keeping you aware of the environment and people around you.