Extraterrestrial life does exist. The problem is: when are we going to find out in which forms and places it does exist? Considering the possibilities, it may be thousands of years from now ....
However, search and exploration is what humans do best and should continue to do so.. (apart from destruction which is also what we do best)
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.