Being able to have my computer do some valuable work when no-one's using it has always made sense to me, as long as I can get it to be fairly quiet at night and not stop anyone from getting to sleep :-)
Thoughts about SETI and SETI@home
I've always had a great interest in computers and space and when I heard about this project I joined up immediately (immediately I was in a position of having a PC and a dial-up connection that is).
I also owe many thanks to Brian Hobby for helping me set up SETI@Home to use his system all those years ago to be able to download multiple SETI workunits so that my machine didn't run out of things to do when not connected to the internet.
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.