But in spite of all of that, the show - both of them - is about hope. It's about hope, and it's about love, and it's about someone trying to do the right thing and perservering and winning in the end. It's about intelligence winning out over violence, it's about love winning out over hatred, and it's about the humanity of the characters... even the ones who technically aren't human.
They both assume that the human species hasn't entirely destroyed itself within the next 50 years. Global warming is a problem that we work through. Republicans and Democrats don't end up starting a civil war that turns nuclear and takes out the entire country, and then the world. North Korea doesn't start a nuclear war of it's own... in fact, for the most part, it assumes that we aren't destroyed by nuclear anythings.
They both believe in the power of humans to work together and prove how great we can be if we really try, not just how small.
They both assume the best of humans, not the worst.
And it's that kind of hope and love and belief in humanity that I want to live each day of my life with. What kind of life is that, if you can't believe in those things?