Why did Jesus’ hometown have a hard time believing him?

Jesus left there and went to his hometown, accompanied by his disciples. When the Sabbath came, he began to teach in the synagogue, and many who heard him were amazed.

“Where did this man get these things?” they asked. “What’s this wisdom that has been given him? What are these remarkable miracles he is performing? Isn’t this the carpenter? Isn’t this Mary’s son and the brother of James, Joseph,[a] Judas and Simon? Aren’t his sisters here with us?” And they took offense at him. Mark 6:1-3

            It’s hard for people who knew someone growing up to see them attain celebrity status.  They remember the “ordinary” person and now it’s hard to believe the extraordinary outcome.  They had no accusations against Jesus or any reason to believe he would be disqualified as Messiah.  It was just hard to comprehend.  In a way, it would be harder for Jesus’ hometown to accept him than, say, Capernaum, a few miles outside Nazareth, who did not see him grow up.