When Jesus comes down from the mountain, He immediately gets hit with trouble. And so it is with us most of the time. You get blessed in your morning time of Bible study and prayer only to get walloped at work half an hour later. Or you come back from a retreat only to get slapped with strife at home. We must remember that the God we meet on the mountain will also give us victory in the valley.
Singing to the Lord is a well known vehicle for Believers to stay in contact with and build healthy relationships with an Almighty God. It's not a selfish act, but it can be seen as a symbiotic relationship between parent (The Father) and child (us). If we chose to be silent, every rock and stone would cry out to Him who created Heaven and Earth.
If you know anything about me you know that I do not enjoy openly discussing hot button topics. Politics? No thank you. Religious theology? I'll pass. Right verses wrong when two people are taking opposing viewpoints? I'm looking for the door. Now you might think this makes me a person without opinion, or possibly without passion. I can assure you neither of these are true. What I find is that most “discussion” is actually argumentative and confrontational without having the desire to seek truth. I do not find any of this appealing and therefore I rarely chime in when given the chance.