I believe that extraterrestrial life exists, and humans will discover it very soon.
But when you talk about Intelligent ET life I have lots of doubts about it. But that's what seti@home is for. If we don`t look for we will never know; so...keep searching
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.