I'm not afraid of starving. It's ... well, relatively easy to not starve.
I'm not afraid of getting killed by wild animals. They will just KO me.
The only thing I'm really particularly afraid of are other hearthings (this is fine/good, no change necessary here imo.)
And resources necessary for building anything are too easy to get.
Just existing in the world is .... not very hard to do. It should be more challenging. Starvation should always be just around the corner if one finds oneself in a bad situation. Enough food to stay at normal function should be more of a sacrifice to give to someone hungry.
ETA: Of course in a sandbox game there are limitless interesting, fun things to do; that's not the part I'm discussing here but I do want to acknowledge that part. There are plenty of things in-game that aren't too easy, imo, but the things I mentioned in this post I feel are too easy.