Huh, yeah, now that you mention it, it does feel anti-climactic to be leaving the planet... The game has this sort of defeatist cloud hanging above it, with how you can't win, even if you saved everyone. Problem is, I don't really want to change the gameplay to something positive, where you liberate the planet at the end, so I'll have to think of some other way of making the evacuation more fulfilling for the player..
Thanks for drawing my attention to this, and I'm glad you've enjoyed the game :D