Pooling isn't always the solution, but it certainly can be in some situations! 

If you are spawning a massive amount of objects (maybe hundreds or thousands) and especially if these objects are complicated (if they have Particle Effects or several Renderers), then you might want to spare Unity from Creating and Destroying them by keeping an inactive reserve of them in the background.

That's what this pool does for you!

It can be complicated to integrate a pool into an existing project. It can also be difficult to determine when and how to implement a pool.

The aim of this project was to make everything as simple as possible. The accompanying YouTube videos can explain more!