I suggest you read The High Cost of Free Parking by Donald Shoup. Or at least think about the actual costs involved with any real estate investment in and near a large metropolitan city.
Or just pretend that it costs nothing to store your 2 ton metal cages. You can live in a fantasy world if you want.
120 billion $ per year for parking cars in the US. Is it worth it?
Noise is a commons, and in order to prevent abuse, we usually allow government to regulate the use of commons. Limits on noise are perfectly reasonable, and in fact desirable.
Free parking is anything but - urban land is expensive. "Free parking" just means "subsidized by everyone else" parking. I don't see why someone too poor to own a motorbike/car should be subsidizing the parking of someone who can afford one.
>I like to compare this to standing at a public parking meter and charging people $20 to park.
there's some pretty interesting urban planning ideas out there that say that parking spaces should be subject to supply and demand - a dense pedestrian area should cost perhaps $8/hour whereas a suburban shopping mall can cost 25c/day. Our expectation that parking should always be free and plentiful causes quite a bit of sprawl and other development issues.
Check this book: