Confused about collisions

Quick question, why do we need a UCapsuleComponent for our pawn collisions ?

In the previous lecture, we saw that meshes have simple and complex collisions, we used this to be able to go through the door. In this project our meshes have collisions as well, and even the simple ones are much more detailed than a capsule shape, so why don’t we use them ?

Is it a different kind of collisions ? Is it just to simplify the process and focus on other aspects ?

This is basically the point. It’s much more simple there’s no need for more complex collision which would make things more complex to calculate for simple collision needed for movement and colliding with things.