Variety Is the Spice of Life

We live in a very big world with lots of stuff in it. Hostess fruit pies come in a number of different flavors, not just cherry, while we can order our hamburgers with literally dozens of different kinds of cheese on them. Even when it comes to something as anonymously indispensable as toilet tissue our choices range from pillow soft, to benignly unremarkable, to something that feels like sandpaper. With this in mind, what sort of sense does it make to play Texas Holdem and only Texas Holdem?