I'm simply using that example to show that "since I am gonna die in 1 hit regardless." isn't something one says often when using a good build with good equipment.
I think you misunderstood what I meant.... Gurnisson pointed out that whenever he is blackbarred he is thankful for having ironflesh, since it is what is keeping him alive, and no matter how much health you have you can still kill just as effectively. Now, I agree with that 100%, and obviously if you have plenty of points invested in IF then it will indeed be the reason you are alive whenever your health is
really low. I was just pointing out that IF can be just as useless as it can be useful. Let us say that you have an 18 strength build with 0 IF, which will mean you have 53 hp. You get into a fight with someone and before dispatching him he hits you three times. You walk away blackbarred... I'm talking 1hp left. That means that he took a little over 17hp (17.3333333...) per hit. Now then, let's examine that scenario if you have IF maxed, so your hp is now 65. The enemy managed to hit you 3 times again, did the same amount of damage per hit, so at the end of the day you've got 65-52=13hp left. Okay, 13 seems a lot nicer than 1hp, right? Well, what if this enemy hit you again in each scenario? In scenario #1, where you have 1hp left, obviously you will die. What about scenario #2, where you have 6 more points invested in IF? Let's see... he does ~17 hp/hit, and you have 13hp left... yeah, you're still dead. The only times lots of IF is pretty much guaranteed to grant you prolonged life (not counting glances and 0PS peasant hits here) is when you are fully plated up against someone using a weak cut-damage weapon.