Did you know that brownies were invented by failing a cake? Apparently, a long time ago, a woman innkeeper, or serving in some capacity as hostess, forgot to put baking powder in her mixture and her chocolate cake came out dense and flat. Ruined. But the dudes liked it anyway. I'm imagining cowboys types.
Now, those are the kind of people that I like to host, the type that will try anything and enjoy everything. But nowadays you always get, "I'm vegan," and "I'm lactose intolerant," and "I'm allergic to peanuts," and "no carbs for me," and "I'm cutting back on sweets," and "I'm on a diet," and "I can't have any gluten." It's hip to define oneself by their uniquely pinched diet. And that challenge takes away all the fun.