Summary: David is excited to go to Jerusalem, where the nation gathers at God's Temple. He prays that there be peace there.
Response: I honestly hear joy in this voice and a lack of David wanting other people dead. I wonder what it is about that place that changes him so. Maybe it is that the temple is there; maybe that the assembly (including defenseless women and children) is there; honestly, I'm not sure I have a good answer as to "why."