You aren't at all interested in knowing how common the Earth is? Whether the process that lead to the Earth orbiting the sun happens only rarely? What other planets are like? Do many (any?) of them have life, or something like it? If they do, what form does it take, is it like us? While Kepler won't answer all these questions, it's a small, but significant step in a long-term plan to address all of these questions. Even if we never are capable of ever going to any of these planets, I'd still like to know the answers to the above questions. And, as another poster mentioned, what better way to convince people to work on technology to travel to other stars than to find a specific destination to go to?