Im thoroughly hyped for 1.0, and probably also for something like 0.3 and 0.4
I don't understand why people are unhappy about the current state of the Early Access version either - it's just the first available version. There are many things i really like in it, and the current state shows exactly how far in the development process the game is. No more, no less.
A game like this has almost no discrete parts that can be released separately, so either the game works or it doesn't (broadly speaking).
I will keep enjoying testing the next versions of KSP, but I probably won't play super long sessions until the game functions better. And that's perfectly fine with me. At some point I will play this game a lot
It's great that the developers are able to gather lots of data about a systems-driven game like this to improve it going forward.