Stylistically, NMS is an absolutely gorgeous game. I find myself hitting the "share" button every five minutes because I've stumbled across an amazing screenshot. If you're the kind of player who would occasionally get high and just wander around Skyrim gawking at the scenery, this is the game for you.
As far as gameplay goes, it feels like the developers couldn't decide if they wanted it to be Minecraft or Mass Effect, and got caught somewhere in between. There are only a few ways to interact with the environment (most of which involve blowing it up with a laser) so there's not really enough opportunities for creativity to make a good open-world sandbox game. But the quests also don't feel like they have a lot of depth to them - travel here, gather resources, build something, travel again, etc, etc.