I think No Man Sky is a playable game now with enough content to justify the price.
It's not a fast paced action game thou, this is no Devil May Cry. It's a bit like Minecraft where you go around planets, build bases and spend a LOT of time collecting resources.
I'd play it more but it's time issue for me. I could play it or finish 3 or 4 other games in the meanwhile and given I need to keep my game knowledge vast I prefer to not dip too deep. Perhaps the creative more (with infinite resources) is more for me...
This said, it's super chill game and if you play it for what it is it works well.