I'm 100% positive that there are other life forms in space. Only human arrogance would deny that. I'm sure that one day we will be able to communicate with or at least examine and learn from these life forms and I'm too curious to see that. Unfortunately, I don't believe it will be this lifetime! ;) However, that's my reason to participate and run seti@home.
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.