One of my main reasons is that I find thinking about processes, infrastructure, systemic weaknesses and how people react to be infinitely more interesting than crossword puzzles.
I would rather think about the heat transfer characteristics of a tandoor oven than try to remember the name of the river that flows through Dudinka, Russian Federation (hint, first three letters Yen____). I would far rather perseverate on building the perfect semi-dwarf apple tree for Eaton County, Michigan than fumble through a single Sudoku puzzle.
I like real problems. They keep my mind and body sharp.
Frankly, I hope I never NEED to use my preps. I take joy in blogging. I love tasting apples and get great enjoyment at inviting my coffee-drinking buddies to help me pick and distribute produce to needy families. I like hunting and fishing for recreation; the food is a bonus. That is plenty of motivation.
My prepping is not driven by fear. Not that fear is a "bad" emotion. Fear is very useful in the proper time and place provided it is not paralyzing. I prep because that is how I am wired.
But if the balloon goes up, I hope to be more "ready" than not.