I cant see spending my computer's vast resources on a useless quest for the cure for cancer when it could be listening for alien life forms, trying to comunicate with earth, a planet they don't even know exists.
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.