I've done: inside, outside, inside. Now it's inside the new keezer, sitting on the compressor hump. My first kegger was a refrigerator conversion and having it inside was a pain. All of your reasons are valid. The main pluses of having it inside are not having to drill the kegger wall and it's a neater setup. Since I have two 5 lb. bottles, I don't have to worry about running out.
I know a couple people that have the bottles outside, because they have multiple keggers.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
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