Snowboards:
1. You don't have check which one is the left and which one is the right.
2. You have 2 less edges to sharpen, or dull.
3. You don't have brakes which get in the way when you scrape wax off your base.
4. You can take off or move your bindings without having to drive to a shop and pay $50.
5. You can put bigger stickers on.
6. They make great shelves or benches.
Skis:
1. You can make shot-skis.
2. They make for great scantily clad pictures.
Feel free to add to either list.