<human>: I decided to make pikelets with my 10 year old last night, but needed to make sure I had all the ingredients before we went down to the store to buy some more milk.  Flour - check, bi-carb soda - check, eggs - check... then my husband said, "no, wait, you had better check the egg carton to see if there's enough left seeing as you know I put the empty shells back in the carton."  

"What!  You don't throw the empty shells away?"  

"Nope, I've always done that.  I wait till all the eggs are finished, and then throw  the whole lot out, carton and all."

We don't buy many eggs - I rarely cook because my husband is the designated cook, and I don't eat eggs other than if they're put in to some kind of baking.  I get the urge to bake something maybe once a year, and had no idea he did this.  To me, this is like peeling potatoes and then leaving the peels in the potato bag with the potatoes until the entire lot are finished.  He tells me this is common in the UK.  I find it disgusting, like hanging on to your trash in the fridge.

So my question is - do you do this or is this weird and gross? (so I can tell him reddit can confirm my analysis of him!)

Can you summarize the given text in a few sentences?
<bot>: My husband leaves the used egg shells in the egg carton in the fridge until all the eggs are used up.  Do you do this, or do you find it gross?