Because from a human perspective, it doesn't matter. The planet used to be a ball of molten rock at one point, it doesn't mean we should shrug our shoulders at

Because from a human perspective, it doesn't matter. The planet used to be a ball of molten rock at one point, it doesn't mean we should shrug our shoulders at the thought of it returning to a molten state. It may be "natural" but it's not suitable for humans.