It's all about the right tool for the job. If you have a very heavy trailer the diesel may be your only choice. If you're within the gas engines capacity then *it's* quite possibly the right tool for the job.
Personally, ALL the diesels (1/2T or HD) are garbage to me. They're unreliable, inefficient and poorly supported by thier respective manufacturers and in some cases, just plain stupid in their execution.
I also would not buy a brand new eng design (gas or diesel) from the big three. They ALL have a record of bad designs and leaving their customers hanging.
(Rant off)