what is davids father telling frank about paint and houses

He's using the "paint and house," to help Frank understand that sometimes we have to do far more than we want to. He describes the entire project from the stripping and sanding to priming and painting and compares it to the way we want life all new and perfect. Everything is a new start, and a new start requires a new coat of paint. Thus, David's father is in his own way asking if it's all worth it because if left to him, "I'd probably just let it go, let it go down to the bare wood."

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