Can You Help Me?

I have a question, and I would like your input. John 21:1-3 says: Afterward Jesus appeared again to his disciples, by the Sea of Tiberias (i.e. Sea of Galilee). It happened this way: Simon Peter, Thomas (called Didymus), Nathanael from Cana in Galilee, the sons of Zebedee, and two other disciples were together. "I'm going out to fish," Simon Peter told them, and they said, "We'll go with you." So they went out and got into the boat, but that night they caught nothing. (NIV) Does this seem strange to you? Just prior to going fishing, we learned in John 20: On the evening of that first day of the week, when the disciples were together, with the doors locked for fear of the Jews, Jesus came and stood among them and said, "Peace be with you!" After he said this, he showed them his hands and side. The disciples were overjoyed when they saw the Lord. Again Jesus said, "Peace be with you! As the Father has sent me, I am sending you." And with that he breathed on them and said, "Receive the Holy Spirit. If you forgive anyone his sins, they are forgiven; if you do not forgive them, they are not forgiven." (NIV)The disciples had just seen the resurrected Jesus, and they decided to go fishing! The Sea of Galilee is about 60 miles northeast of Jerusalem. That is a long walk. So here is the question, why did the disciples having just seen the risen Lord decide to travel back home and start fishing again? (And yes, there is a point I am trying to make.)