Barring not-yet-invented advances in automation, shrinking population means fewer and fewer people providing goods and services compared to the number of people that need them, which means worse and worse poverty for larger and larger fraction of people.
Yes, people want to recreate, doing all kinds of activities with various levels of risk. They don't need to concern themselves with whether you can respect it.
In Croatia, which is (and has been) seeing a tremendous rise in real estate prices, everyone talks about the high prices, but rarely can you hear about about housing shortage. Indeed, building new housing is sometimes brought up as one of the reasons for rising prices.
It influences playability, which is functionality. Fender's marketing advertised the shape as a functional feature: body carve for easier playing standing up, double cut for easier access to higher frets
Since we don't have direct access to happiness dial, every advice for increasing happiness is going to be like that.