Creating your token is akin to funding your project. For example, if you create a game that runs on Solana, how do you generate profit to keep the server running? You can encourage people to buy items within the game, but this can be very challenging for a small indie team. So, consider creating a new token where you can hold around 70-80% of the tokens and distribute the rest through airdrops. When people enjoy your game, they will be more likely to purchase your token. This provides you with a means to control your economy and further develop the project. Of course, they can do it on Solana in many ways, but having one thing you have full control over is better. And the dark side is many scam teams use this way to rug-pull projects, getting all the money from investors.