Tony looked towards Peter--the sole light to be found anywhere around him. He wanted to ask how the boy could live his death all over again and have the calm within him to build Tony himself back up after his utter failure.

Then, it truly sunk in. He lived. Peter didn't. Thanos might as well have carved him out with his own weapon and left him barren.

"Earth." Tony mechanically replied. "I need to--to see."