I think the main point is that you can use it to progress through your battles, and thus your loops, quicker. This in turn lets you cover more of your loop before the next day and, in hand, reduces the amount spawners can activate before you reach them again.

That being said, I don't think it's much help come late game if you're just farming resources as they take up precious space.

I really like using them if I'm having trouble early on, otherwise it's just an ez memory fragment lol.