I have a standard bed AT4 and didn't care at the time of the purchase, I was coming from a 2nd gen Tacoma so any bed size would do in a full size. I do agree it looks better, as you said it's more proportional. Now that I have it, I love it.
Your comment, along with my thoughts, are why I don't beleive the manufacturers when they talk about nobody buying them. Tim talks about that a lot but the premise ignores some facts. The facts are it makes sense profitability wise for the manufacturer to limit their options if they don't think it will cost them a sale. Would a ford guy buy a GM truck if it came down to the bed option? I don't believe that.
Also, we hear numbers a lot "5% of trucks sold are other than Crew Cab short bed" (I'm making that up for an example but we hear things like that a lot from the manufacturers regurgitated by YouTube reviewers) How many trucks made are long bed, or not crew cab, do they not sell on the lots? We're not given that information.
Ford and GM always look for ways to cut costs and drive up margin. This has always seemed like a false numbers game to me, they make less and thus sell less and then use parts of that data to confirm their decision and limit choice for consumers which then drive down cost and margin up.