Its a valid point and I def get where youre coming from. There have been a small number of times I could have used the extra length. But only with awkwardly long things. I dont even know if they would have fit in the 6'4 tbh. I guess it depends on what you are using the truck for. The main thing i put in the bed through out the year are loaded pallets and they have no trouble fitting but I'd like more payload. So im probably looking at a 2500 soon. But for this guy and his uses and what both trucks are equipped with, i just dont see the point of going with the 6'4 bed. If both had the same options, id say have at the 6'4 I suppose.
For me, the looks of the short bed arent an issue. I guess it looks a little stumpy if you really stare at the truck, but IMO the 6'4 bed also doesnt look quite right on a stock 1500 because the trucks are way too low to the ground from the factory.
Out of curiosity I was actually just checking the bed lengths for Ford and Chevy, the F-150 short box is 5 1/2 ft and Chevys site SUCKS so i gave up. But it looks like a similar 5 1/2 ft size. I think Chevy just usually has their longer bed stocked on dealer lots a lot more than the short bed. Ford's seem to usually have the short bed as well when I see them on the road. So its not like Ram is the only truck running around with a short bed.