Given that the universe is infinte there has to be ET life somewhere its a question of when not if.
The main reason that i run SETI is because i leave my computer on downloading music and films that takes up alot of internet bandwidth but takes very little processing power this program does the opposite so if my computer is on anyway i may as well do some good with it
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.