What if only third generation stars produce life? Maybe there are thousands of races out there that are just beginning to invent the wheel and a few who destroyed themselves? I have no idea. In fact I don't "believe" in ET. I suspect there may be so I search. :-)
If we are alone this is profound, if we are not, this is also profound. SETI is a win win science."
Sagan argued that we are the new kids on the block--after all we just discovered radio 100 or so years ago. Everybody else--following Sagan--is either dead or much, much more advanced than we.
Being alone is depressing. Firstly, to quote "Contact" it seems an awful waste of a universe. Secondly if we are the best the universe can come up with, what a rotten universe. Finally it invests everything you do with a horrible portent....
--Boris
Maybe we are. Maybe there is no need for anything better since we are all potential. If we can reach our potential the universe should be pleased with the results. If the universe has any feelings on the matter.