I run SETI@home because I believe in the project. It is the best way to find the other life in the universe. I don't have high expectaions for finding life soon, but it really is just a matter of time, and we are getting closer everyday.
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.