Leaving outside camper lights on?

A friend of mine thought it was awesome he could jump terminals in his trailer plug to leave ALL the lights glowing at night. I ended up making a couple plugs with a switch on them for him and a couple of his buddies.

I kept one for myself and have used it all of one time. I felt odd being all lit up at night while the campground was dark and using the power at a time I dont really need to.