One time I was in the next town over where they have a grocery store chain that I can't normally shop at. So, I figured I'll get the big shopping cart and grab everything that looks interesting.

Went through the whole store and in the end, I stood at the checkout with a pack of cookies and some vitamin tablets. That almost felt worse than walking out without buying anything. It felt like I was insulting their product selection.

Although, to be fair, it was absolutely terrible.