Be careful who you place in this category. By the standard of many in "churches" Christ Himself would have been labeled the same way.
While denominations are not perfect, there is no perfect visible church, they follow the pattern of the NT and bring order for the members. There are creeds, standards, etc., as well as a system of governing.
What happens in the home church when there is a doctrinal disagreement? Domestic dispute? I can see how a home "church" would be successful if only one family attended and the head of the household was the head of the "church".