Following reasons I've found about clutch set failures.
If you release the clutch too quickly, you’re setting up the clutch to wear off and burn. Now, it won’t happen if you do it once. It happens gradually if you continue doing that. So, to avoid it, you must learn to release the clutch smoothly.
When you keep the clutch pressed for too long, it leads to wear and tear and eventually, burns the clutch. Again, it won’t happen in a day. But doing that often will burn the clutch. It is possible that you’re stuck in traffic, excessive traffic, that you have never seen before and due to pressure and stress of running late, you keep the clutch held for too long when in actual, you should be putting your car in neutral and keeping it so until the traffic moves. Doing so, will make the clutch fume…
Holding the clutch mid-way also damages it. Either press it properly or don’t press it. There’s no mid-way for using the clutch of the car.
If you’ve a habit of resting your foot on the clutch pedal, you’re causing the clutch to burn. Always rest it on the floor and put it on clutch pedal only when you need to use the clutch.
Using the clutch to keep the car from rolling back instead of the hand brake burns the clutch, gradually...
Clutch sets, transmission system etc last longer in single person driven cars IMO.