The "Juice" as you put it, will eat holes in your pistons just as easily as forced induction. Both induce higher EGT's. Both require proper A/F ratios so as not to run lean (leading to detonation, VERY harmul to rod and crank bearings). Thus, cooling the intake charge (which is a natural phenomenon with nitrous and the purpose of an intercooler with forced induction) and running the correct ignition timing as well as higher octane fuel, along with more of it, reuslts in a much more "stable" ignition.

It's a catch 22. More weight and higher initial cost vs cheaper and lighter....until you need to refill the bottle.