Many people shot this idea down, since the idea that a superior intelligence (debatable since being aware and being intelligent aren't the same) would commit suicide over concepts of being "immortal" in a dying universe were contrary to their atheistic aesthetics.
And then I read this:
"Warwick's robots seemed to have exhibited behaviour not anticipated by the research, one such robot "committing suicide" because it could not cope with its environment." -Kevin Warwick is a British engineer and Deputy Vice-Chancellor (Research) at Coventry University in the United Kingdom.
We may have already discovered A.I., and it's possible that it killed itself milliseconds after it became aware.