I am sorry you are unable to attend church, Blain, because of medical reasons. But Sparkman is not talking about those exceptional circumstances. He is talking about able bodied people who stay away from church because they have weird and totally unbiblical doctrines and are unable to accept correction by leaders who have studied for the bible using correct hermeneutical or Interpretation principles properly.
Fellowship is so important in growing in character. That doesn't just mean correct doctrine, but love, sharing, support and understanding. Healing from abuse, abandonment, hurts are best dealt with in person, by loving, Spirit filled Christians.
About 10 years ago, I started attending a Baptist church under the leading of the Lord. Three ladies and I, with the pastor's blessing started a book study of John. We went through it verse by verse. The next year we did Luke, the year after Acts, the next year Romans. We prayed a lot for different needs, and two of the ladies were especially gifted in hospitality, and taught me a lot! They learned how to systematically study the Bible from me. We learned so much about the Bible, but more important, we grew tremendously in character. Because of circumstances, we all went separate ways, eventually although we stayed in touch. One woman became a leader in women's ministries and evangelism. Another became her church's leader in children's ministries and using ESL to reach immigrants with the Bible. Another worked with brain damaged people, sharing the gospel with them. I became a worship leader and I have a ministry to the hurting and broken.
I know that God is using us in ministry because we were consistent not only in our small group Bible study, but because we were active and committed in our church. That pastor was far from perfect, and eventually got really off track in his preaching. He wasn't teaching bad doctrine per se, but he continued year after year to hammer home something basically irrelevant, and many did leave. Some got sidelined with no church, but most found good Bible believing churches elsewhere.
I cannot emphasize enough the importance of belonging to and being committed to and participating in a local church body. Brothers and sisters in Christ can walk with us through valleys, rejoice with us in good times, and sharpen us while demonstrating Christ-like qualities. And that is not something you can get on the Internet, or sitting at home by yourself, grumbling about how wrong all churches are!