This is what confused me the most about Unity in my game dev class in high school. It made no logical sense. Why would I put logic that has nothing to do with s

This is what confused me the most about Unity in my game dev class in high school. It made no logical sense. Why would I put logic that has nothing to do with specific objects, inside a specific object? And why would I create a random invisible, unfunctional object to attach the code to? It's such a weird system.