Brock Lesnar's Big Exit: Is He Really Done Wrestling?

So, Brock Lesnar just got schooled by Oba Femi at WrestleMania 42! He left his gloves and boots in the ring like he was auditioning for a drama! Fans are dreaming of a SummerSlam comeback, but word on the street is Brock might be done. I mean, why come back after such a big exit? Just let Oba shine, right? How you doin'?