Human beings have virtually no value if they are just machines

[Chad32]

In what way does living forever make things meaningful when they otherwise wouldn't be?  People have limited attention spans.  If you haven't shared time with someone in 1,000 years or 1,000,000 years, of what special significance is that time spent.  At each moment, our pasts are finite.  This is the case whether you live an eternity, or merely 100 years.  How does an infinite life span add meaning in a way that is categorically different than what 100 years does?

Are you saying that there is nothing more special than the moment - which is the time we live in, we can't live in the past or future...

but if we no longer exist, then the alternative of living forever is really special isn't it?

We can imagine that a life from the past to be significant, because of memory, but how does the memory help the deceased? And how will that be of any value when those with the memories die?

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... Something being finite and rare is what gives it value.

To whom? to the dead or the living?
And when the living die, then that life is less than nothing.

To the living. If you do great things with your life, then that greatness gets enjoyed by your children, and your community. Life is not worthless, just because it ends. If you don't care that your deeds effect the greater population, then that says more about you than us.