Generics in the C# language give you much more than collections. I'll show you a few of the techniques that generics make possible, such as generic methods, generic interfaces, and generic classes for common design patterns

Applying these techniques and extending them with your own ideas will enable you to write code that you can reuse in many different ways. The end result:

You won't write less code, but write your code only once, and write it in such a way that you can reuse it in as many different situations as possible