i do think extraterrestrial life exists. one day we will find them maybe tomorrow or 1000 years from.
at the moment computers with seti is are best hope of finding life out there.
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.