My ex couldn't do anything around the house, but he had a cousin who was quite handy, and he often helped us out. In return, I'd cook a meal for him, his wife and their three boys.
His wife was an ignorant, hypocritical woman with a big mouth, and she never approved of me because I drank and smoked, which made me a wicked woman in her eyes.
Anyway, after I started gardening and canning, we had the family over to dinner (cousin had hooked up our clothes dryer), and I made stuffed peppers, green beans with new potatoes, corn and pickled beets. As I was getting supper on the table, she spent the time loudly preaching to me the dangers of home canning. I assured her that I followed all the federally approved instructions, but my assurances seemed to fall on deaf ears.
As she dished up the boys plates, she made sure they got nothing she thought I might have canned. One of the little ones wanted some corn, and she said, "No, you can't have that. It's no good."
I had to smile, though, as she dipped up the new potatoes, as I had canned those, too.
Her husband ignored her rantings (which I suspect is how he managed to stand living with her), ate everything I'd fixed and went back for more.
It comes down to the fact that some people are just plain rude.