It's magnetic force, common to humans. They feel better, finding same minded ones. Call it herd instinct, or something. Nothing in the bible of Jesus teaching indicates to go to church. Matter of fact, Jesus himself tells to do just exactly the opposite - pray in the darkness and seclusion of one's home (in one's heart). The Lord's Prayer 5And when you pray, do not be like the hypocrites. For they love to pray standing in the synagogues and on the street corners to be seen by men. Truly I tell you, they already have their full reward. 6But when you pray, go into your inner room, shut your door, and pray to your Father, who is unseen. And your Father, who sees what is done in secret, will reward you. 7And when you pray, do not babble on like pagans, for they think that by their many words they will be heard.…(what, to me, is reference to "speaking in tongues". And I witnessed just exactly that. That was quite a scary experience, and from the church elders)