Feel your pain, OP. Had mine less then a month. Probably the second camping trip, but the first one with the brand new electric jack I had just installed. Going to leave, used it to crank up the WD bars. Set the tongue back down, but barely off the ground, and finished putting on the sway bar. Pulled out. Wondered what that scraping sound was. Looked back, didn't see anything. Kept going. Thankfully, the campground maintenance guy caught up to us in the golf cart. Bent the jack (still works, though). Thankfully, they didn't charge us for the gash in the small asphalt curb I hit.
I've also forgotten to lock the coupler on a utility trailer. Safety chains work.