Christianity (at its core) is fellowship with God. And fellowship with God not only eliminates spiritual loneliness, but it also fills the soul with the joy of presence, which then spills out on to others through interactions and relationships. Without frequent and intimate interactions with the Lord, we will never have anything substantial to offer this world. "You will show me the path of life; In Your presence is fullness of joy; At Your right hand are pleasures forevermore" (Psalm 16:11).