I'm sorry, but both you (OP) and your party were being asses.
This has nothing to do with your smart-*** remarks about how you know how to play PLD because you have 9 completely unrelated level 75's, or how you heard DD PLD was the way to go.
All that is meaningless if you dont know WHY this is the case.
You see, once you can take the damage, you can slowly start to switch in DD pieces for existing Tank pieces (Enmity, HP, Def) on your way to 75. Not saying full out DD, i'm saying Hybrid-Tank for now. That is, if you can take the damage. At level 75, most you are fighting are T's and maybe a VT every now and then. Ofcourse damage taken is going to be low in those cases and switching to a (full) DD configuration is optimal for those spots. There's no arguement there. But that is certainly not the case at level 58.
Look at yourself and the party. You were barely staying alive. More so, you actually died. Draining the party's MP, time and exp. Being able to DD better means absolutely **** if you're causing downtime.
One could argue it's the camp, because seriously, at that level the exp there is horrible. But when you're up against IT++, when you know your sword is going to do exactly ********* against them, you're best off focusing on ENMITY, HP and lastly DEFENSE over stubornly sticking to your DD setup. Or better yet, changing camps, but that wasnt a possibility i suppose.
To take what the last person said and add into it, the only thing worse than people you cant get through to no matter how much you prove them wrong, is people you cant get through to no matter how much they think they're proving you wrong.
Paladin is about tanking. But more importantly, it's about gearing up for the situation at hand. When the situation asks for more enmity and defensive gear, you switch to it. And when the situation gives you the opportunity to do more damage without neglecting your main task or getting your *** kicked, then yes, you can gear up more offensively.
It's not important exactly how much (or little) pDif gets lowered from adding DEF, or how much more enmity you could have generated through damage done in DD gear (certainly not not something existing against IT++, at level 58). If you need to gear up defensively to shave even as little as 20 damage off a hit, or to get those extra points of enmity to keep hate, you do so. Especially so if your party is complaining you're doing a terrible job at what you're doing.
Your main income of hate against IT++ is going to come from A) Provoke, B) Flash and C) Cures. You're not going to be hitting anything, and if you are, those 10 damage hits arent going to give you anywhere near the hate you want to have. PLD can DD, yes, but not at 58 and certainly not against IT++. Level 75 T-VT, Yes. Level 58 IT++, No. On top of all of that you have exactly 0 Enmity gear listed, and i'm fully aware you dont switch anything in either. Even 1 point of enmity is going to boost hate gained from Provoke, Flash and Cures by atleast 1%. Let alone 10 enmity, or 30. That's more enmity generated than you could have gotten from sword hits at that level against those monsters. Were you even eating defensive foods?
If you know something isnt working against your target, dont stubornly keep it up. Especially not when you've been proven it kills you.
Evasion might do ****, heck, even extra defense does **** if you got enough of it, but enmity works with everything. And against an IT++, you got neither the defense nor the enmity to do your job.