It reminded me of John Lennon's "Imagine." Being that I am a believer in God and just war, stuff like this doesn't do much for me.
You could like at this as Sagan does and conclude that we're small, insignificant and on our own. Alternatively you can reason that in the midst of all this space and all these planets, the earth is the only one we've discovered that has life on it. That is pretty special. It also suggests the questions of why are we here, how does life originate in the midst of matter, what existed before the universe did, did the universe originate from nothing, etc.
There are so many important questions that science and logic alone do not adequately answer. In addition to those I previously listed, there is the question of personal values and morality. No scientific experiments can discover what is good in life, what is wrong, what we should dedicate our lives to, etc. Those are questions we answer based on our personal experience and faith. We all have values, morality, and faith in something. It is impossible to live without them. One cannot live without making decisions, one cannot make decisions without making value judgements, and one cannot make value judgements through logic and science alone. The difference between atheism and theism is not between reason and faith but between one faith and value system and another.