What an ambiguous and unclear debate topic. I could interpret this phrase: "Everyone will die in the future." meaning one of these several propositions:

1. All human beings are inherently mortal, and have a finite lifespan.

2. There will be some catastrophe (e.g., flood, disease, war) which will destroy the entire human race.

3. human beings are not inherently mortal , but in the future medicine will still not have advanced to the point to allow immortality.

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Because I can't tell which of these three propositions was intended by the debate moderator, I will answer each of them:

1. All human beings are inherently mortal, and have a finite lifespan.

This is the common-sense view. It is usually supported by biological evidence that the human body naturally decays at the cellular level. I do not have the biological knowledge to tell if that's true. However, I think that even if humans were not inherently biologically mortal, they would likely still end up dying eventually due to accident, war, suicide, or disease. The probability of a person surviving the dangers of life forever seem infinitely small. Therefore I'd say that immortality might be theoretically possible, but practically impossible.

Verdict: Everyone will Die.

2. There will be some catastrophe (e.g., flood, disease, war) which will destroy the entire human race.

This seems fairly likely as well. Astronomers tell us that the odds of our planet being destroyed by a meteor, for example, are nigh certain. Even if some of us manage to escape to a new planet, it seems to be a common theory that the university will eventually either collapse in on itself or expand to such extremity that the entire thing will reach absolute zero or something equally awesome and dramatic. I'm no scientist, but based on my limited knowledge, this seems likely.

Verdict: We will all probably die.

3. human beings are not inherently mortal , but in the future medicine will still not have advanced to the point to allow immortality

I have no idea on this one. I don't know enough about biology.

Verdict: I don't know.

Seeing as how no living creature is immortal, then I assume that everything will eventually die.

No one can escape death unless Science creates a serum that makes people live forever.