THE OBVIOUS REASONS:
1. You like big red hats.
2. You are in the Red Hat Society.
3. You are a cardinal.
THE PRACTICAL REASONS:
1. It adds instant flare to your outfit.
2. It covers up messy hair.
3. Maybe wearing a big red hat will distract everyone from the dark circles under your eyes. I've tried it!
THE BEST REASON TO WEAR A BIG RED HAT: