Well somehow I cant believe we are the only life in the universe, but one never knows, I figure why not help seti, etc, whats a little cpu usage on your machine especially when your machines are on 24/7.
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.