Buying in bulk

I’m curious if anyone else has a love/hate relationship with buying things in bulk like I do. 

On one hand, it’s usually more cost effective and helps save some money. 

On another hand having more on hand takes up more space in your home. There is also this mental toll created in having to remember if you do or don’t have a certain item. And of course depending on what item your buying in bulk there is the potential for waste if you don’t use the items before an expiry date (potentially reversing any cost savings that you incurred). 

I think I’ve created a good balance over time on knowing what items are good to buy in bulk and what items I should avoid. 

But frequently when I drive to Costco I find myself asking “Is this really worth it?”