You notice three identical trucks while walking. You don’t really need to perceive them separately. It does help you to generalize things of that sort unless you are a journalist or a creator (anybody is a creator in some way, but let’s not get into it).
You wouldn’t be able to perceive everything separately if you wanted to. Things like that take time and energy. You can’t focus on everything. And if we’re created that way, it can’t be a negative thing. Sure, there are some cons to it, but so is everything else. You can’t help missing certain things.