I am unable to rent it out because it is too small per city rules and it doesn't have a kitchen. I could rent it out illegally, but if there was any dispute with the tenant, the tenant could retaliate by suing me for renting an illegal unit. In a dispute, I could be forced by the city to pay back ALL of the rent said tenant paid to me, ever.
My cabin sits vacant.
I'm sure you could find a good tenant who'd enjoy living there so it's just insane that's not allowed.
English aristocrats, which all could travel out of UK whenever they wanted, would still have "country houses".
It's quite common for people to buy a house outside the city (or more) that they vacation too. And whenever they get a chance to relax, they go to that place (as opposed to random travel locations).
This is similar in concept, just with a smaller (and artificially expensive) house.
I suppose it's just for people that can afford that. Like any beach house or holiday home.