So if you own a certain parcel of land, what would be its use to you or any advantage of owning it? It's all digital so in reality, you don't own anything. why would it be valuable in the trading market?
like for example, if you buy the Buckingham Palace, then what? i just want to understand if there is real use case of owning the digital land. or you are just paying for the thought that you own that place? isn't it a sick idea?

0xEarth divides the earth up into 1 of 1 NFT digital collectibles. So only one person can own each LAND (or digital representation of earth).
Within the smart contract is an entire DeFi stack. You can rent the LAND for someone else to use for fees and rent length decided by the LAND owner.
So for example, you may want to get LAND near Central Park in NYC as it's a high traffic area. 0xEarth has multiple dApps in the works to enable LAND + NFT visuals across the globe.
The announcement blog post outlines this:
https://medium.com/@0xearth/intro-0xearth-3960b277f9d5The more you say something the more I got confuse already lol pardon mi ignorance brother. Why in the world would someone in the right mind will buy to own a land digitally while someone occupied and owned it in the real world? Maybe you can help me understand that a bit.
The LANDs token would be worthless in the market for we know all that would be useless when the real land is barren.
Have you seen any other digital land platforms such as Decentraland, Cryptovoxels, or The Sandbox Game?
These platforms are tokenized land ownership on Ethereum, but they each create their own unique digital world.
0xEarth is no different, except that the base digital world is that of earth. Using the ZXY (Slippy Map tilenames)
https://wiki.openstreetmap.org/wiki/Slippy_map_tilenames to generate and enforce unique ownership.
This is just the early stages, but baked DIRECTLY into the token smart contracts of 0xEarth is an entire DeFi stack. Allowing you to interact with you LAND by using it for advertising, or renting it to others to use.
https://medium.com/@0xearth/intro-0xearth-3960b277f9d5https://0xearth.github.io/The coming dApps will be a live map, allowing you to see owned LANDs, LANDs you can rent / interact with, or mint new LANDs.
A partner is also building an Augmented Reality experience leveraging 0xEarth.