Two main reasons for me 1) More space for my mouse when playing games. I prefer a low sens and full sized keyboards are a legitimate problem for this 2) Desk

Two main reasons for me 1) More space for my mouse when playing games. I prefer a low sens and full sized keyboards are a legitimate problem for this 2) Desk space. If I'm not playing games it's also helpful to have space for a notebook next to my keyboard when working, or my MIDI controller while making music.