[Freakin]

WASD/ESDF are always going to be a better setup because of the large number of buttons you can hit without stretching.

Saying "More than enough buttons available near your hand for most FPS games." may be ok for you, but that's not universally true. Even on old games like Quake 2 I would have run out of buttons around the arrows. I use WASD and was using every button from YHN over for my common tasks, and other ones past there for less common tasks.

The arrows can't compare with it that way. Once you train yourself to WASD it is just as comfortable and easy to find as arrows.

Try it out and try to get used to it. Pretty much all serious gamers use WASD by default. A lot of left-handed people start out with arrows and usually don't deviate from it.