Yeah, we have a Jeep that's rated to tow 7000# too. No way in the world would I do it!
I guess there is more than one Jeep vehicle, but the ones I am familiar with, the Wrangler and Grand Cherokee, are horrible tow vehicles. These are just marketing numbers for the person who wants to haul his boat to the lake a few times a year, and white-knuckle the whole trip hoping that there is no wind, no need to make a sudden stop, and has a well-loaded trailer without too much or too little tongue weight.
There is a huge difference between the kind of "SUV" the original poster has, a Suburban, and a grocery-hauler "SUV." The Ford Expedition and Toyota Sequoia are also quite good tow vehicles. Certainly the Excursion is also, but of course they stopped making it.
Marketing can be very deceiving, though. Until I drove one, I thought the new, bigger Dodge Durango would be a decent little towing vehicle. I was wrong, it sucks.
There is also a huge difference between towing a boat on a trailer that is made for that specific boat, and a general-purpose cargo trailer that may not be perfectly loaded every time. That's why you see these people going down the highway with a 25' boat with a couple of mercruiser V8s behind their Jeep Grand Cherokee on a tri-axle trailer and it looks (and probably is) okay, but that same guy can go to U-Haul, rent a 5x8 box trailer, load it all wrong, and end up unable to brake or steer.