Armor

Does anyone playing melee classes feel like armor is kind of useless? While the melee classes do have great damage and ad clear, something is wrong with armor. I do not have any testing done to confirm but I had a warrior with no energy shield and tons of armor, some decent passive HP regen and HP on kill and had zero survivability. As soon as I swapped one piece of gear to something with energy shield my survival rose rapidly. Sometimes, I would get hit by quite a lot and lose my energy shield immediately, but my HP would hardly dip. Oddly my energy shield is very low at just 16 while my armor is giving me something like 30-35% physical damage reduction. I think there is a hidden interaction here somewhere besides the fact that armor does NOTHING against any elemental, poison, or chaos attacks. Very sad. Almost want to run nothing but energy shield and evasion on my warrior. Something feels bad here. Anyone else get this feeling or am I tripping?