I congregate with Christians all the time. Cub Scouts, family dinners, outings, now homeschool outings. I do not go to church, because I have not found one I am comfortable in. That does not keep me from discussing, talking, engaging, etc. My family, mother, father, brother, sil, bil, sister, all discuss/argue/talk/pray together. My gramma and I have incredible arguments and discussions over Christianity, the Bible and 'what it all means.'
You don't need a building to congregate. You don't need to go to church to find God, or other Christians. Some people prefer that route, and good for them, they put together the Easter and Christmas pageants I enjoy so much. Other people, myself included, prefer a less 'established' system.
Either way, God doesn't want you living under a rock. Isn't that the whole point? To get input, to gather, to remind and love and support? I'm no Scrooge, neither am I Tammi Faye (sp, sorry).