Seriously: Because we don't want to be evil. We're willing to not have rounded corners in some browsers, or have menus that don't get animation, or whatever...but we're not willing to prevent anyone (even folks who are blind or otherwise have accessibility problems) from using our product.
Seriously: Because we don't want to be evil. We're willing to not have rounded corners in some browsers, or have menus that don't get animation, or whatever...but we're not willing to prevent anyone (even folks who are blind or otherwise have accessibility problems) from using our product.