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It is impossible to prove if God exists.
If a God interacts with the world in any meaningful way, then those interactions can be measured and proven.
There must be life other than our own in the universe.
"Must" implies a 100% chance. Although the likelihood is very high, it can't be 100%. There is a chance, however unlikely, that we are the only life currently in existence at this moment.
If we were to abolish all ethics, humanity will be able to answer many scientific things about the human body (And possibly augment it) that would have taken decades and possibly centuries to answer.
Abolishing ALL ethics (not just those tied to research) includes those ethical principles currently protecting the world from nuclear devastation.