Another example for you.. Rather than donate money to the church, I donate my time and talent instead. In that way it is focused 100% on my local parish. Another one, I develop my relationship with god in a way that is helped by worship through the church, but is not dependent on it. There are loads of times where the "leadership" of the church leaves something to be desired, yet the progress of gods kindgom marches on. If christianity were to "devolve" in the future to house churches again, that would not stop it. Yet, the fact that it is not a "house church" system today is not a reason not to practice your faith