Should we keep listening?

Frank Drake,an astronomer at Cornell University,begn Project Ozma 50 years ago,which is noted as the very first real quest to listen for signals from intelligent beings in the vast,void of space.Officially,we have heard nothing to prove there are other beings in our universe.

Of course,SETI came along,and continued this search,It is now financed almost exclusively by private donations,and is still plugging along,but again without the desired results.