I just got one of the SRH in .480. I took it home the same day as my 5" .500 S&W. You don't want to shoot a gun that big, fine. Don't tell me that I have too much gun when what you really mean is that you don't you need that much.
You really don't have to worry about someone mass producing something bigger than .50 cal because someone else arbitrarily decided that .50 is "big enough" and "you don't need more that this." If it's all the same to you, I would like to be the judge of what I do and do not need.
I do not see the point in getting worked up about what calibers we should or should not have, nor do I understand how you can say that you "hate" a certain caliber. You may not like the premise behind it's design or the market forces that are driving it's sales, but in the end, it's capitalism. You may not like the .500, but it's wild success has allowed Smith to bring back the classic line of blued guns.
You don't like .480, don't buy a .480.
I like .480, so I bought one. Laissez Faire.