In bags?

I walked into Old Navy yesterday morning intent on letting the girls spend $10 apiece in their birthday money from grandparents and also replacing a pair of borrowed maternity pants that I ripped a hole in accidently last week.  They’ve redone the closest Old Navy store so I asked the staff:

Me: “Where do I get a cart?”
Lady: “We don’t have carts anymore, but we do have bags.”
Me: (Pointing at my twins who were petting their fake dog manikin while woofing and squealing loudly.) “I don’t think I can cart around my toddler twins in bags.”

Let’s just say we didn’t spend our money there yesterday….

Why would they do away with carts?  It makes no sense to me…