I'm sure most of us here relent and share a tiny bite.
Probably more than we're willing to admit to at that.
As long as it isn't greasy, doesn't have questionable seasoning, and isn't possibly toxic (onion, garlic, avocado, chocolate), I will sometimes give my cats a bite. But not at the table, I'll save a bite for each and give it to them after I'm done eating.
Of course they also play scavenger cats and will wait under the table for dropped food or in the kitchen when I'm cooking. The problems with a scavenger cat, I once dropped a piece of brownie and Sho swooped in to eat it. I practically tackled him and pried the brownie out of his mouth.