If you are seeking a wife – is one as good as another?
If you are sick – is one doctor as good as another?
If you are catching a train – is one as good as another?
If you are buying a house – is one as good as another?
If you are taking medicine – is one as good as another?
The Lord’s church is the one He bought with His own precious blood. Why not obey the gospel and let Him add you to His church, over which He rules as supreme Head and in which the Holy Spirit dwells? Surely, it does make a difference. Why wait until the Judgment Day to acknowledge this? It will then be too late.