Scott shook his head. "No, I didn''t do it for those reasons. An alien attacked our world. He had these stones called Infinity Stones and with a snap of his fingers he did away with half the living things on Earth. A lot of people lost loved ones. I was helping a scientist with an experiment that involved studying the Quantum Realm and I got stuck there because he and his wife and daughter were eraased by the snap." He'd had no idea what had happened, he'd believed he was only gone for five months and it had been five years.
"I finally got back, I don't know how and I've been gone for five years. I had a crazy idea and some really smart people figured out how to travel back in time and get the stones and reverse the process. So we got most everyone back. We lost a few in the fight but a lot of people got to come home." They had lost Natasha and Tony and although he hadn't met him, they'd lost Vision too.