We're going to die anyway, what's the point in trying to stay healthy?

We're constantly told to be healthy, to eat healthy, to exercise. What's the point in that since we're all going to die anyway? We can't avoid death, no matter what we do. Yes, I'm healthy too and I exercise, I just don't see the point sometimes.
We're going to die anyway, what's the point in trying to stay healthy?
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