It is from wisdom that a person performs the optional prayers in his house so that his children can see and learn from him, and so that the women can follow his example and so that his house does not become a grave which is not prayed in.

You are an oppressor and you think yourself to be the one who is oppressed. And you eat what is unlawful and you think that you are cautious and fearful (in this regard). And you are a sinner and you think yourself to be just and upright. And you seek knowledge (of the religion) for the world, and yet you think that you seek it for Allah.