Why do tanks exist?

[Kalocin]

It's definitely a gear level thing, I never lose aggro in dungeons but I did originally when Stormblood first launched. It's even more noticeable now because a lot of people are in way better gear than before. It'd be like in Heavensward trying to tank with ilvl 230 vs a dps with 270, gear was always some form of a factor.

In terms of losing aggro off the bat, I usually don't even give them a chance by sprinting ahead between pulls. That being said stick to AoE threat generation and don't worry so much about trying to pull the mob back as those dps should switch targets (and when they do it'll suck if you're focusing on one).

Now to answer why tanks exist...

Poor AI in general (for any mmo really), as they'll often switch targets or bounce around if there's similar enmity bouncing. There's no body blocking in this game so you can't really have a "real" tank via melee. If there was, you would probably see dungeons of 5, two melee for tanks, two ranged, and one healer. That being said FFXIV doesn't work like that so we get enmity meters.

[Kohta]

http://na.finalfantasyxiv.com/lodest...acter/2182265/

This is what I'm currently working in, but I could also argue if I have that gear from tomes, I have no reason to really run the dungeons anymore making the whole experience rough regardless

[Kalocin]

http://na.finalfantasyxiv.com/lodest...acter/2182265/

This is what I'm currently working in, but I could also argue if I have that gear from tomes, I have no reason to really run the dungeons anymore making the whole experience rough regardless

You probably more than anything just need to replace your weapon and your pre-70 accessories as they have no strength on them like the current ones. You'll struggle a little bit but it won't be as rough as it currently is. If you do all of your roulettes and an extra lvl 70 (Ala Mhigo since it's capped at 310) you'll have enough verity for a weapon.

The reason to run dungeons is entirely debated on what content you want to do. If you just want to clear the content once for story then yeah, there's no point in running them more than once. If you want to do raiding or extreme primals, then it'll be good to do them so your able to queue or get into party finder groups.