I felt the same way on release but the game has held me a bit longer for my recent 2nd attempt which I'm enjoying.

I'm not sure if the biggest problem is speed of content releases. The game is relatively easy which makes it more of a building / exploring type game rather than survival and that's fine for people that like those games but I find it easy to put down when there isn't much of a challenge.

Hopefully that gets worked on somehow. I know there are mods to increase difficulty but they are fairly primitive in their approach (increase mob dmg / hp)