Crankshaft end-float should be between .002 and 015".
It is a debatable subject but in my mind riding the clutch will certainly cause thrust and release bearing wear. Many tractors require the clutch pedal to be pressed in order to start. This puts load on both components when the oil is cold as well as increasing the load on the starter motor and battery.
OK, so it's not a lot but it exists.
Likewise I would never have a car that stopped the engine automatically if waiting for lights etc. It may be environmentally friendly but who will pay for my new starter motor when it wears out after being operated 3, 5, or 10 times more than it would have otherwise?