Staying with traffic jams for a moment, you’re likely to find yourself stuck in them – a lot. In a manual car, you’re constantly needing to raise the clutch to the bite point (not too fast else you’ll stall), edge forward slightly, then depress the clutch back down again. Repeat this process many many times and it gets tedious very quickly.
One of the main benefits of an automatic car, to edge forward you simply take your foot off the foot brake, the car will slowly edge forwards, then simply press the brake when you want to stop. This feature makes dealing with traffic jams much more tolerable and helps to reduce driver fatigue.