It basically adds one more thing to your arsenal. You may not always need it, but knowing you have it when and if you need it, can make the difference in catching or watching sometimes.
Ask the guys who can't reach them when they're breaking mid-Canal.
For some, it may just be a "stronger-than-you" mindset...switching the "stronger" attribute to a "casting farther" than you thing.
When fishing from shore, who in their right mind would want to be handi-capped with not being able to long-cast? I sure wouldn't. Whether or not I need it, I take comfort in knowing it's there. Just my opinion.
Boating guys are the ones who should really be worried about this though.