Avengers: Annihilation

Clint Barton didn't take himself seriously as a general rule.

He knew no one ever would, and as the saying goes, "If you can't beat 'em, join 'em." And join them he did.

Clint thought for sure he was done when he brought Natasha back from his mission to kill her.

He thought he was done when Loki took control of his mind.

He thought he was done when Pietro took those bullets for him.

Clint Barton may be done with the universe, but the universe wasn't done with him. He still had a role to play, an important one, so he couldn't be done just yet.

It didn't matter that he wasn't super powered- sometimes being a person is the only super power someone needed in the world.