Beds should not give bonus comfort when in a desert biome
It doesn't make sense for a bed to be more comfortable with a heat source nearby if you're in a desert. Now if you're in an arctic region or something, sure.
It can get really cold at night in the desert. Speaking from experience. During summer it can still be warm, but during winter and the near-halves of spring and fall it can get chilly (comfortable for me). It's not that unreasonable. Just depends on the time of year, weather, topography (including proximity to water), etc. Also whether or not you're worried about wild animals, automatons or trees.
If we want to be picky, though, "well lit" should also not apply more comfortable stacks because people generally prefer to sleep in the dark.
It might be more reasonable to add comfort stacks based on the hunger meter's fullness.
It can get really cold at night in the desert. Speaking from experience. During summer it can still be warm, but during winter and the near-halves of spring and fall it can get chilly (comfortable for me). It's not that unreasonable. Just depends on the time of year, weather, topography (including proximity to water), etc. Also whether or not you're worried about wild animals, automatons or trees.
If we want to be picky, though, "well lit" should also not apply more comfortable stacks because people generally prefer to sleep in the dark.
It might be more reasonable to add comfort stacks based on the hunger meter's fullness.