Increasing life expectancy is not the same at all as immortality.

Nearly all the changes in "life expectancy" came from reduced infant mortality.

There seems to be a hard limit to human lifespan around 120 years.

Unfortunately, it turns out that the human body is composed of about four dozen critical subsystems. Each subsystem seems to be good for about a century.

If you're lucky, all your systems work as expected for that long, and you become a centenarian but don't live long after that.

For the vast majority of us, one of those four dozen systems fails early, and we die.

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Low earth orbit is very important. We still benefit greatly from satellites in low earth orbit every day.

Society during the 60s and 70s benefited from technological spinoffs of the Moon Race, but that stopped quite dramatically.

Remember, we're talking about going to the stars!

This means sending off a hundred trillion dollar spaceship with enough supplies in it for generations, a spaceship that will never come back, and might report back some scientific information in centuries or millennia.

We will never do this. It's wildly expensive. If we were willing to invest hundreds of trillions so a few thousand people could visit a single nearby star, we could spend the same money and not decimate the biosphere.

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During the 60s, I was utterly opposed to the people who said, "Spend the money on Earth."

But 50 years later, we did nothing to stop killing the planet, and now disaster is baked into our future, and we continue to pump CO2 into the atmosphere, which will lead us to catastrophe.

I was utterly wrong.

And now we're out of time.

Arguing with religious people is pointless. Spiritual beliefs like yours can't be refuted with arguments or evidence.

You seem young. You're probably going to live to see the collapse of the biosphere. What I don't understand is why this isn't of burning importance to you.