Because with 4 fingers, you can access 4+4+4 keys +6 around easily. The thumb can access ALT+space comfortably only. This totals in _just 20_ keys available.
That is assuming the keys SDFG for moving instead of WASD.
EDIT: I mean comfortable access only. The other hand is reserved for the mouse.
If you access any other key and then quickly one of these 20, you may hit a different key which is as annoying as the CAPS_LOCK key.
Instead of ctrl+key or shift+key, I prefer key1->key2 because that works everywhere on the keyboard, not just near WASD.
And if my move-keys serve a double-duty for "backward / A+sit", or "acid / long-range acid" it is easier to remember.
Currently, A+Acid for a "long-range acid" spell would switch hotkey-bars and not toggle them back after using the spell (macros aren't triggered by used actions :(, so you can'T do it with macros BTW: similarly as you can't restore a previous target…).
That is assuming the keys SDFG for moving instead of WASD.
EDIT: I mean comfortable access only. The other hand is reserved for the mouse.
If you access any other key and then quickly one of these 20, you may hit a different key which is as annoying as the CAPS_LOCK key.
Instead of ctrl+key or shift+key, I prefer key1->key2 because that works everywhere on the keyboard, not just near WASD.
And if my move-keys serve a double-duty for "backward / A+sit", or "acid / long-range acid" it is easier to remember.
Currently, A+Acid for a "long-range acid" spell would switch hotkey-bars and not toggle them back after using the spell (macros aren't triggered by used actions :(, so you can'T do it with macros BTW: similarly as you can't restore a previous target…).