Same old same old ?

[gerald]

Scientists predict Earth-like planets around most stars

http://www.anu.edu.au/news/all-news/sci ... most-stars

They found the standard star has about two planets in the so-called goldilocks zone, the distance from the star where liquid water, crucial for life, can exist.

“The ingredients for life are plentiful, and we now know that habitable environments are plentiful,”

“However, the universe is not teeming with aliens with human-like intelligence that can build radio telescopes and space ships. Otherwise we would have seen or heard from them.

“It could be that there is some other bottleneck for the emergence of life that we haven’t worked out yet. ---- Or intelligent civilisations evolve, but then self-destruct.” -----
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and then self destruct!? --- are we about to do the same? ---- same old same old?