Originally Posted By: Nemo
I could keep that telescoping ladder on the porch for a fast up or down putting my mind at ease for more options than my single exit.

One additional thing to keep in mind: depending on your porch, you may want to secure the ladder somehow (e.g.: a combo-lock chain), especially if the ladder will be in plain sight. A ladder is pretty much the most useful tool, short of a crowbar, you can give a potential thief. The balance between emergency accessibility and security should be evaluated.
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“Hiking is just walking where it’s okay to pee. Sometimes old people hike by mistake.” — Demitri Martin