User blog comment:101stranger/Ah, the wonderful world of UNSC infantry weapons/@comment-59290-20100405194248

Yup. Humans are durable, relatively inexpensive to train, and learn quickly and without odd glitches in programming. They also don't have to be EMP-hardened, or checked routinely for frozen parts or sand in their gears. They're faster, more suitable for rough terrain, and in every way better than drone soldiers. That's why you may see drone aircraft, but you will never ever see the death of the human infantryman.