Why buying for Dad is so difficult

I’m two days away from my 47th Christmas and only have one gift left to buy. It’s for my dad. He’s going to get the same thing I’ve gotten him the last two years, something inexpensive, consumable … something that I know he’ll like, but maybe isn’t what he wants. How do I know? Because my own kids are having the same problem buying for me.

What do I want for Christmas? How does one explain it? And kids, they wouldn’t understand it if I told them. I didn’t understand it, not until a few years a...