Everybody is laughing at the idea of spending billions of dollars we don't have on a "space force." But you won't be laughing when the alien invasion comes and we are DOMINATINNNNNNG SPAAAAACE!!!
Oh... you say aliens that are capable of interstellar travel will have technology that makes any "space force" we come up with about as threatening as a BB gun? Well... well... WE CAN STILL KEEP THE MEXICANS FROM INVADING THE MOON! HA!! CHECKMATE, HATERS!!!
Space exploration has always resulted in amazing technologies that eventually filter downward and make everybody's life better. I 100% support my tax dollars going towards organizations like NASA, who do a lot more than just push the boundaries of human knowledge... they also invest in technologies which keep us safe and help us to have a better understanding of the world we inhabit and (at least until the current administration) the dangers we face from the destruction we're causing to it.
Likewise, I also 100% support my tax dollars being spent on defense. Sure, I think it's insane that we have such a massive military complex when so many of the current threats we face can't be remedied that way... and it seems crazy that we have weapons enough to destroy the world a hundred times over and are told we still need more... but I want our military to always have access to cutting-edge technology which keeps them (and us) safe. So yeah, budget for that. Not military parades and golf trips on Air Force One, but that.
And now we're getting a space force?
We've got homeless vets, a stupid-ass 100% completely ineffectual wall to build, and legions of other problems that could use our tax dollars... but pew! pew! pew! pew!