The idea that there is a lot of "bad design" in the universe implies that you already know what the universe is designed it for.
Without knowing that, all of the points that the sun will eventually explode, most places are uninhabitable for human life, and that people get sick, etc. tell us very little about how good the design is. If the world isn't meant to be your personal paradise, for example, but there is a different function the designer had in mind, it may very well be that all of the anomalies we find in the universe are part of plan we just don't know anything about.
Without knowing that, all of the points that the sun will eventually explode, most places are uninhabitable for human life, and that people get sick, etc. tell us very little about how good the design is. If the world isn't meant to be your personal paradise, for example, but there is a different function the designer had in mind, it may very well be that all of the anomalies we find in the universe are part of plan we just don't know anything about.
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