I figured the mic on a computer desk would get in the way of screens. Isn't the sound better when its next to your ear? I just didnt want people to hear me tapping the keyboard as I do games.
There are directional mics that wouldn't pick up the KB sound. There are mics that are low enough not to get in the way, assuming your monitor is on a regular old monitor stand and not sitting flush with the desk. There are also mics you can mount to the top of your monitor bezel, like a webcam.
I'm not recommending anything in particular, just saying there are more options if you're sitting at a desk than at a couch.