I think extraterrestrial life exists because the universe is WAY to big for just us. Hopefully, we will find it soon, but I doubt we will actually be there to see it. I use SETI@home so I can help increase our chances of finding the illusive ET.
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.