There’s nothing abnormal about wanting to have a nice Shabbos seuda alone in your own home, and no reason to think that just because you like setting a dozen places at the table, there’s something wrong with eating alone.”
FTR, Golfer, I would point out that I personally never said anyone was abnormal (not saying you said I did), just that wanting consistently to be by oneself even on Shabbos and yom tov (especially Pesach) is not a typical thing for most of us. People want to connect with others, and sharing a meal on Shabbos or yom tov is a fundamental common ground, even for a shy person. I think we all should be comfortable enough in our own skins to enjoy our own company, but Breishis teaches us that it is not good for man to be alone and I suspect that holds true for us ladies, too. At least, some of the time.