My wife had the clutch in her 2007 JKU manual blow up on her.
She was running 37s, and probably put 5k miles on it before it was re-geared, all city driving, so that probably put a lot of extra stress on the clutch.
Along with her not exactly the easiest on a clutch, but I would guess this would more simulate some offroad type driving.
It was really a blessing in disguise though. After it went out, I finally got around to the gears, lockers, and put in a new centerforce clutch that made it so much better to drive.
I was worried about it being stiff, because it was stiffer than the stock. I was worried about her pushing the clutch, but it made it so much easier to push, smoother, engaged better, and just made the whole thing more fun to drive.
If I bought another used one with a manual, it would be one of the first things I would change in it.
I ran my 2001 with the 5 speed forever. It made noise the entire time, but never gave me any trouble.
It would grind going into gear when cold, I kept waiting for something to happen to it, but it never failed me.
I ended up getting an Auto this time, which is my first one, and so far I am liking it. Mainly because the wife was very particular on the color, so when we found what we wanted, the only thing it didn't have was a manual.
The new Auto seems to be a pretty good piece. I have liked it a lot so far in the ~3k miles we have had it.