You don't need a diesel and all of the extra cost to buy it and maintain it to occasionally pull a camp trailer.
I've pulled trailers through the Rockies and all over Nevada (the most mountainous state in the lower 48) with a 2500 HD gas truck with no problem whatsoever.
If you were pulling extra heavy loads very often then yeah, a diesel would make sense, otherwise skip the smell, noise, hassle and expense.
