I heard the devs might not add enemies, which would be boring in my opinion, right now im not crazy about the game, cuz it seems boring since it only has the building and mining in it, which are finished.
You can find enemies in multiplayer, besides there's random ships flying around which are not friendly. Tho this game is more about creating stuff then exploding it. It makes you to figure out how to make things to happen themselves, automate them, multiply...
You have to be a kind of person (to enjoy this game) who likes creating stuff not only using stuff which has already been made for you by someone else...
I've heard rummors that there could be programmable computers in the game, where you could actually program (visual or text - no idea) stuff to happen as you want..., just rummors tho so far.
Mining and building is not finished..., guys still adding new stuff to game and fixing bugs. The game's still in ALPHA so...