Absolutely makes sense for most planets to be rather barren. What I found a bit disappointing so far - keeping in mind I started yesterday and I'm only a few hours in - is how mostly when you land on a planet there is a key point of interest (an outpost, a mining facility, a city etc) at a landing site and then immediately a whole lot of randomly generated nothing around it. No roads or paths, NPCs, houses etc. I haven't really been to a place where I got that Skyrim feeling of going out into the wilderness and finding interesting things. I hope that later on there are at least a few areas with more substantial exploration. Still enjoying the game though.