about 2 months ago - Rocket - Direct link
As noted above, it is currently intention. We may tie it to difficulties (allowing modders to make difficulties that turn it of), or maybe introduce devices or something that the player has to do to enable it to happen.

This originally occurred way back when Stationeers was only in space. So it made sense once the player had made a "room" there would be gravity, as it got very annoying floating everywhere inside.