It never seemed right to me that the player can't launch himself in the rocket to return to the home planet (or has that been added in recent versions?).
Without this, what is the point of all the engineering that the player is doing on this planet? Just to survive the biters? If so, how does the player derive the motivation to live? It is a pretty sad world if the player knows that they will be alone forever, or at least until they die. The player needs hope.
Of course launching oneself would be optional, since so much of the game doesn't even begin until after the rocket is launched (e.g., scaling to a megabase and all the unique challenges that it brings).


