1 page and you are sick of this topic... wait till it hits 30 or 40..

Two things about gas ignition kill switches.
1.) you're a darn stupid nincompoop for not using one.
2.) you're a darn stupid nincompoop for using one.

Take your pick.. I use one for the ability to kill a runaway engine, such as one time last summer when a muffler bolt fell off the plane... I could not slow down enough to land. I lined up for final, almost on the ground and killed the engine. Perfect result.

I use the kill switch each and every time to kill the engine after taxi'ng back then turn off the manual switch. I also have a choke switch, but that is not fool proof in killing engine in cold weather and you may flood engine in warm weather.
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I am sure I said something wrong, so go for it.