In the game, your sanity increases rapidly as long as you stay near the surface.
I understand that optimism is important in life, but a guy who can simply stand in the sunlight and start giggling happily doesn't really fit the style of a Lovecraftian game, right?
Moreover, if this change is not made, then in practice players only need a large enough supply of berry juice or some other simple food that can be produced in bulk. Alcohol also fails to serve its intended purpose. People brew alcohol to drink it, after all. Having players distill liquor mainly for making alcohol bandages is a rather strange design choice.
