I would argue that it's moreso that there are many more specific and clear social rules, but most people don't know how to explain them, so when asked, they just say "read the room". As another person said, it might also be a reminder or shorthand of something that you are assumed to already know intuitively.
I think part of the skill is tone, which is kinda dumb since the truth you communicate is basically the same. Even so, something like "I don't know why I'm alive anymore" might be considered rude while something like "eh" or "not great" or "same as usual" (hopefully that's not your usual) or even something like "well, I've been a bit overwhelmed by current events recently" would generally not be seen as rude.
You can still say something that's true; you just have to soften things. It would be easier if the softening was not necessary, but as people have gotten at earlier, you have more power to change yourself that to change how the rest of the world reacts to things.
There are a few places I've found with lots of prebuilt monsters for GURPS, though they aren't really consolidated in one place.
I usually look through one if the following if I want something prebuilt:
the creatures of the night books (mostly solitary monsters you could design an adventure around, with suggestions for each one)
the fantasy bestiary (lots of generic and mythological monsters from all over the world, with stats and descriptions for each one)
dungeon fantasy monsters 1-3 (lots of monsters, kinda built with dungeon fantasy settings and power levels in mind)
the gurps repository also has tons of free and generic statblocks
Why? I generally find it pretty easy to avoid unhappiness, and if I'm building bases in different biomes for the pylon network, it's just a bunch of free discounts.
Based on the other comments, it seems like it's more in case there's an earthquake or something and the elevator is stuck under rumble.
If you were trapped in an elevator under rubble for a few days, it'd probably be nice to have a snack on hand.
If you're in a situation where you can't get out of the space without bonking the cars next to you, wouldn't you most likely have had to bonk them to get in?
I would argue that it's moreso that there are many more specific and clear social rules, but most people don't know how to explain them, so when asked, they just say "read the room". As another person said, it might also be a reminder or shorthand of something that you are assumed to already know intuitively.
I think part of the skill is tone, which is kinda dumb since the truth you communicate is basically the same. Even so, something like "I don't know why I'm alive anymore" might be considered rude while something like "eh" or "not great" or "same as usual" (hopefully that's not your usual) or even something like "well, I've been a bit overwhelmed by current events recently" would generally not be seen as rude. You can still say something that's true; you just have to soften things. It would be easier if the softening was not necessary, but as people have gotten at earlier, you have more power to change yourself that to change how the rest of the world reacts to things.