Kitty is happy, so Mommy is happy :) People like to point out when we feed things to our animals that aren't "good" for them, but hell, I eat crap that isn't "good" for me all the time. And? Lola the Bunny will go all gangsta on yo ass if you don't share your Poptart.
Same for my dogs. They love the poptarts! Don't know what it is about them but my they are like crack for my dogs. I say life is short and we should all (animals included) enjoy some things with out feeling guilty.
I don't know about the other cats but I'm betting Riley would bludgeon me in the dark for one!