If the place is on fire and I'm in my bedroom, I'm not sticking around to grab my BOB...I'm going right out the window next to my bed. In the low oxygen situation present during a house fire, it's best to just get out as fast as possible, rather than to try and lug a heavy bag out the window. Especially since as soon as you pop open that window it's most likely going to cause the fire to get bigger.

I'd rather just get out into the fresh air as quickly as I can. After that, I can get over to my back door, open it up, and grab my bag right there. The bag is close enough to that back door that I can grab it without even going inside.