Gas, diesel, TT, tent, or a blue tarp thrown over a rope tied between 2 trees, as long as you have a good attitude you're welcome around or campfire.
On the gas vs diesel thing, I have 2 trucks, one gas, one diesel. To some degree they are 2 different animals designed to do 2 different things - I wouldn't want to be without either one.
If I had to choose which one I liked better it would depend on the task at hand. Both are just great at their designed purpose, and like the MH debate, there is no wrong answer. Buy what works best for you and your budget and enjoy yourself.