Atheist Churches are springing up around the world. Those who attend these congregations say they miss the community that a “real” congregation provides. What's more, they assume that it's this human need to be in community that drives Christians to attend Church. I suppose that in some cases they might be right – about why some people attend Church I mean.
For those who are serious about growing in their walk with Jesus however, meeting together with other like-motivated believers is indispensable. We need their insight, their protecting, encouraging, their warning and restoring ministry to us. We simply cannot make it spiritually on our own.
The effort to be an autonomous Christian will not and cannot ever work. This is because we cannot learn to love our enemies, do good to those who hate us, and pray for those who persecute us if we are not in contact with these people. God designed our spiritual maturing to be grown in community as a community project.
If atheists want to go an listen to poems and be inspired by good speakers, and if they want to enjoy the benefits of being with others, good for them. Let them meet where ever and whenever they want.
If those who follow Jesus want to become like Him, and they do, then we have no option but to follow Him into the throngs and learn to love others and to be loved by others.