Furthermore, how do you know what is "doctrinally sound" other than sitting alone under the tree with your Bible? Are the Pentecostals right? Baptists? Presbyterians? 7th Day Adventists? Mormons? Jehova's Witnesses? It comes down to discernment, but if you do not have the Holy Spirit to guide you, you won't know. I agree communing with fellow church members is important, but the church is the body, not a building. Just as I can have a conversation with Billy Bob in my community, so I can have a conversation with you here. I do not believe the medium in which you use to have that conversation matters as much as the points being discussed. I would even say that those who are adamant about "going to church" are being a little performative because they heard it somewhere else and it sounds nice to say. It's not a requirement.