At the core, this game is simply about space exploration. Seeing what interesting shyt you can find from the procedural generation. You're right, it's an aimless game. After a while you have to make your own fun, set your own objectives. They did add in some "story" and side quests to help give some structure, but 90% of it is avoidable and arguably not necessary.
Originally when I typed that all out it was one of the better money making strategies. After this latest update, that's a wasted exercise
. The money would have been to buy ships or materials to ease other aspects of the grind. But honestly that was easily solved with some Cheat Engine usage, and now you can loosen the gameplay rules as much as you want, money is only worth as much as you want it to be.
But you hit the nail on the head - No Man's Sky is a wide collection of ideas with shallow implementation and cohesion. There's no rhyme or reason to base building, ship collecting, exploration, any of it, outside of the initial wonder and whatever self motivation you find.
The reality is, given 15-20 good hours of gameplay, you've seen the bulk of what they can show you. Beyond that there's little reason to pick up the game other than to just zone the fukk out for a little while. There have been times where I load it up, ask myself what the fukk is there to do, then close it back out
. As far as a reason to get back into it, I don't know if I could find a good enough one for you. At best it would be play the main quest through, see some of the lore, try and build a few cool things, then put it down until they drop the next ocean wide puddle deep update