For normal everyday family dinners at your house, does everyone just leave the table once they've finished? And I'm not talking about expecting others to wait for extra slow eaters, I mean when the "slow" person (me) takes a total of 10-15 mins to eat their dinner?
YABU - Yes it's normal for the slowest eater to be left sitting alone at the table
YANBU - It's rude to up and leave them there alone