It also serves to place a small amount of weight in the back, helping traction during wintery conditions.
Personally, I like the spare tire under the bed; does not take up useful bed space, and a deterant against theft.
You should still have the jack and 3 bars. Helps to remove a flat tire situation.
"Never argue with an idiot; they'll only drag you down to their level, then beat you with experience"
2007 F150 STX Supercab (4.6 2V V8), Edge tuner, factory navigation, Mark VIII electric fan conversion with flex-o-lite controller.