I'm a middle-aged geek from South Georgia who thinks computers are the greatest thing since grandchildren.
Thoughts about SETI and SETI@home
Life outside earth exists. I'm convinced of it. The discovery of proof could come any day ... or it may already have come and we haven't realized it yet. (My screen saver may return it any moment!) Whether or not we'll make close contact and communicate by exchange is another matter altogether. They could be our greatest friends (like the Vulcans) or our greatest threat (like the Borg or Kanamits). Or we could be theirs (friend or threat). Either way, it's best to know they're there.
I'm not convinced we should transmit a beacon. After all, we've been leaking signals into space for decades now. A beacon might be like turning the water hose on someone in a swimming pool. Not sure of the benefit.
We (my wife and I) run SETI@home because we find the whole concept of looking for evidence totally amazing. We'd like to be a part. It's one of the few things that people can cooperate with, regardless of race, religion, sex, philosophy, or anything. And as cool as computers are, that's cooler.