Not forsaking or neglecting to assemble together [as believers], as is the habit of some people, but admonishing (warning, urging, and encouraging) one another, and all the more faithfully as you see the day approaching - Hebrews 10:25 (AMP)
One of the greatest sources of joy in a believer's life is the joy of coming to church. The joy of church fellowship naturally has a way of soothing every stress and anxiety as well as replacing sadness with unspeakable joy. This is mostly because when we gather to worship in church, we're obeying God's command and there is great joy in knowing that we're doing exactly what God wants us to do.
Some of the joy we have when we come to church include the joy of:
Fellowship with members of God's family. The joy of fellowship with members of God's family is something we can't do from the couch of our home. The worship; the prayers we pray for one another; the gracious encouragement and offers of help; the divine atmosphere and more make coming to church a delight. I'm excited about church attendance because there's certainly no place like it which is the kingdom of heaven on earth.
Discovering more of who God is each time. God has given us the church: a glorious body where we can keep discovering and encountering him on different levels each time we converge to fellowship together. (John17:3, Ephesians1:17).
Hallowing God's name with liberty. The church is a place where we worship and extol Christ's name unhindered. Matthew10:32 "Whoever acknowledges me before others, I will also acknowledge before my Father in heaven." The church gives us the privilege to hallow God's name openly. I experience an unexplainable kind of joy when I come to church, because I know that my presence there gives me an assurance that Jesus is also confessing my name (and yours) before his Father in heaven.
Giving and helping. The Scripture tells us that it is more blessed to give than to receive (Acts 20:35). We experience the joy of giving for the propagation of the gospel of Christ. As well as the joy of giving our resources to help others.
Finally, I have seen, heard and personally experienced depressing feelings, thoughts; sadness and worry fade away after attending a church service. Therefore, the joy of church fellowship rightly attended can't be overemphasized. It's something you shouldn't trade for anything in the world. Besides, it has both physical as well as spiritual blessings attached to it.