Next you'll be buying a red corvette. So Chris, at what point does a bow actually become "long"? Past 72"?
I'll play, reasons why short bows are better:
1. They're more efficient to carry if you are travelling.
2. They require less resource to be effective.
3. If the brush is thick...Florida, you may as well be hauling a cannon with a long bow.
4. They are going to get "dinged" less over time.
5. Not only can you shoot them from the ground, you can shoot them from a tree, a horse, the back of a moving vehicle, while moving "on your feet", somersaulting, flying through the air, general ninja behavior, stealth, etc.
6. They keep shooting interesting...long bows are predictable. How boring.
7. They require actual skill to shoot.
8. Long bows were generally useful for battlefields...then came firearms.
9. You can hide them under a trenchcoat!
10. They make better BACK SCRATCHERS! (Do not underestimate this one's importance!)