Well, i am used to playing with my fingers on the keyboard, (not the arrow keys) and the mouse. Long ago i used to turn with the "side" keys, but i decided that strafing is much better, and so i switched. NOT EASY. Took at least 2 weaks to make strafing feel natural. A while longer to get real good at it.
They probably don't want to relearn all of those keys
The opposite of love is not hate, it's indifference.
The opposite of art is not ugliness, it's indifference.
The opposite of faith is not heresy, it's indifference.
And the opposite of life is not death, it's indifference.