Because a nice sterile, straight line beam of light is much worse than a hunk of lead that shatters into a dozen pieces and rips your body to shreds...But that's "World Government" logic for you....
Quite a while back the army was developing a laser weapon that was designed to blind a gunner through the optical train of a sight system. But the purpose of the system was to maim, rather than kill. So the system was dropped as it was a violation of the Geneva convention.
But since many of our enemies, especially in the Middle East, ARE NOT SUBJECT TO THE GENEVA CONVENTION RULES as they are terrorists, do not wear uniforms, etc. we can blast away at them. I’d also put fat boy Kim Jung in that category!!!!
Genny will try to ban private ownership of guns some day.
Can’t get global government otherwise.