I run SETI@home because I think that whatever I can do to help the cause, is more than worth it. SETI has always been a project I've followed so to be able to help it in any way would be an honor.
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.