Not sure what this thread has to do with anything other than a bragging thread. Different driving conditions will wear a clutch out faster than others.
Not really a bragging thread and your second statement here is actually false. Driving conditions should have very little bearing on the clutch life. Most of my miles driven on clutch cars have been city also. It comes down to driving style.
There was a time in the old days that clutches were so jerky with uneven pressure plates and clunky mechanical clutch linkages that would wear and engage unpredictably that "slipping" the clutch was the norm. But with modern diaphragm clutches with cable or hydraulic mechanisms there is simply no reason to slip the clutch ever under normal driving conditions and the result is clutches that can last after the car has fallen apart around them.
Simply knowing the pressure point of the clutch and actually engaging the clutch and adding power at the same moment the clutch has been released results in a smooth drive and almost no wear on the clutch.
I have taught a lot of younger people to drive manual transmissions in both cars and on motorcycles and I always start off by having them get the car rolling and driving around a parking lot in 1st gear using only the clutch....I tell them to not use the gas pedal at all. This way they learn what the pressure point is and that you not only don't need to use the gas pedal to get moving you definitely don't need to slip the clutch at all...ever. Once they learn this simply concept they all go on to become very good manual transmission drivers who don't fear sitting in traffic since they aren't going to stall the car or wear out the clutch.
Many people who were taught to drive manual by older people have been taught wrong so it is not really their fault....but that is pretty moot now since it's almost impossible to find a new car with a clutch and many people under 40 have never driven one.