Why? Is hearing the enemy in your ear that much off an advantage then hearing on screen? Wanted to get a headset for awhile now but sticking w the defaults

I'm not the best at multiplayer FPS games so hearing the enemy isn't all that important to me. I bought my headset simply because it provided sound quality that was lightyears better than what was coming out of my tv. Plus, if I want to play late at night I can do so without disturbing other people. And if people are being loud around me I can throw on my headset and just get lost in my own world.