Is Immortal Flesh underrated?

I used this lovely belt on 1-month madness(SC) and only once i died to a sudden elemental burst(thanks to the deadly, blue skele-archers in a critmap(perhaps i would have lived if i removed the proj.weakness in time?), otherwise topaz/ruby was anough.

I only skipped Temple/TC/Crema bosses and some Invasion ones.. Beyonders was ok'ish, never saw Aba.

And on the other hand, this belt offered 90% of my manaregen, only used BM/Clarity on -40% maps.

Highest map done was those few Cremas.

I like using amulets with +1 max resists like:

and I would NEVER wear an item with -5 max resists. Against some bosses this belt can be very good but most of the time it sadly suxx ass. Who is afraid of physical dmg? Just grab a LC and a ToH or block & aegis and everything is fine but elemental dmg is really nasty. For casters I love to use a:

for another +5 max resists. In my opinion -x max resist is the worst mod possible in poe.

I agree, it's underrated. Basically, free Vitality and Clarity auras, but the cost is 20% more Elemental damage taken (and not that many other good stats on belt). That's not great, but there are uses.