June 11, 2012He's a slave, a drone... like a worker ant. He's designed to not even care.
He's not really an engineer. He's a pawn in their game. All these big grey clones are expendable and stuck in dangerous unthankful roles.
Stop assuming that the characters on screen are correct - they were ""so, So wrong"
It may not be the Engineers trying to kill us at all.
Perhaps they Engineers stopped visiting because of a massive slave rebellion, which is serious stuff when your slaves are trained to fly starships full of bio-weapons.
What would you imagine the main complaint of these drones is? the boring work? Or being expendable. Ask yourself. If they are breeding Xenomorphs there, what are they using as hosts?
I'll run a theory buy you, based on educated guess work, and what we see on screen.
The big grey guys are occasionally sacrificed one at a time to seed new worlds. But they are sacrificed in large numbers to host xenomorphs.
Eventually they find out about Earth (only one of them has been there and he was turned into fragments about 4 billion years ago. ) This planet where their makers the so-far-unseen Engineers have been paying social visits to check in on the new species, the humans.
The Greys discover that humans are freer than them. Humans have free will, and can choose their own purpose in life.
They rebel in anger and jealousy at their makers and at their new creation, given more blessings than they have after billions of years of loyalty.
After abducting a few humans and testing them as compatible for Xenomorph infestation, they get ready to launch the attack.
Something goes wrong, and pandoras box is left wide open.