So basically, what is a quirk that will absolutely break/ruin an item for you. No matter how good the positive effects are, what is a quick that will make you put sell it and not think twice.
For me:
Weapons:
Prior to Patch 2: Stamina loss on damage taken (because it kept leading to me getting stunlocked)
Post Patch 2: Focus continuously drains
Armor: Equipment load decreased by any%
It might easier to ask which ones you can accept, because almost all of them are deal breakers.
Lose stamina on damage taken, I see that I dont consider any positives.
loose XP on …
It happend already twice that i accidently got that trait and ended up underleveled. Without noticing at first. The mean part is that it happens so slowly and silent. It is self accelerating at some point. Very fierce trait.
gain less XP is fine though.
The others strongly depend on the build.
Can you lose levels from XP loss?
Also, is there a list out of all the current negative affixes?
Some of the ones I have considered deal breakers:
-decreased equip load
-focus halved (no thank you!)
-health % reduced
This plays into my thought that cursed items should roll the curse first and then improve the positive affixes based on how bad the curse is. Maybe you will take a 50% focus reduction if you get %25 damage and 5% focus on hit in exchange.
no. so when you are lvl 30, you can happily use them without any disadvantage at all 
btw if you have two of them you have no focus left at all 
Like the above person said, once you hit the max level in the game, exp decrease and exp loss mean nothing.
Also no. There are no lists anywhere for the game. I wish there was a good guide or something somewhere, but nothing exists so far. I mean, theirs fextralife, but good luck with that. Thats as bare bones as it gets and not at all helpful.
And yeah, there are technically multiple dealbreaker negative quirks on the cursed weapons, but I was mostly wondering what is everyones top #1 absolute each.
If it was up to me, it wouldnt be a thing at all. Its not fun. Period. Theres already so much randomization, and the positive effects that the cursed items do give out arent even usually worth it themselves. Im spending 50s to buy a bunch of armor and enchant everything, and then I can use nothing because the quirks are dealbreakers, or because the effects just suck. Im dropping 40s constantly to get back 0 useful items, and about 12s in return for selling everything back. Its not worth it at all.
Ive probably been using the exact same gear for the past 40 hours because nothing good is actually happening the RNG is so low, and Im burning through so much money.
Just treat the purple as another possible tier to get when enchanting, or at least make the positivies much more worth it. Or hell, let me choose the enchants, because even the gem infuse effects are kinda mid.
Can’t really agree with you. If everything is positive, min/max becomes inevitable. I would rather keep curses but make sure that a powerful curse comes with a benefit worthy of consideration and potentially opens up creative build choices.
I still think back fondly to items like Gotterdamerung, Constricting Ring, and Thinking Cap from Diablo I. They each had their place and were fun to build around. Yep, I’m showing my age here.
Curses keep the positive affix creep healthy I think, some of them will actually steer a build.
I play a auto attack build with no focus use at all, so reduced focus or focus drain mean nothing to me and I can happily equip them.
My other build I tested with Full HP and nothing else was wearing plate and had “XP lost on hit” I stayed level 27 for a few days until I found a replacement, but I could clear Crucible in that state so it didnt matter much.
I imagine that people that are able to play without being hit at all, can use “HP reduced” gear and take advantage of the positives there without breaking a sweat.
I hope that in the future there is a way for the heavier curses to have different affix pools available with them and not just random because “Indestructible” and “Gain 5% stamina on parry” don’t balance out “HP reduced by 30%” at all.
Stamina lose at hit and hp reduce. All other at my 30 lvl are okey (no focus skill build).
Forgot about the hp one
I always sell the “lose stamina on dmg taken”. Just thinking about possible stunlocks makes me burn that abomination in hell.
Focus halved is actually not that bad if running a build that does not really rely on runes. I have a dual dagger build fully buffed on stamina regen and attack speed, so i just slice and dice everything to shreds.
But i also do sell almost everything that has more than one “on parry” passive on it. Items just get flooded with these, and i only have 1 parry focused build. Wait… no… i had… I re-speced that one lol.
Edit: has anyone tested gold or xp loss on dmg taken/death? how much does it actually lose?
I think XP on death was ~5% of the current XP bar.
And silver about 2 silver. I am pretty sure it is a constant and not dependent on wealth, since I lost ~2 silver from my 2.1 silver when I found that first time.
Never used it since that 
… actually i might be a little traumathized.
Addon: considering the numbers from @Lacky, XP on dmg taken likely around 1%. (what is massive tbh)
Edit: obviously i was blinded by the trauma… 10% gold it is.
hahaha, sorry i find this unreasonably funny. good old “Schadenfreude”.
But thanks for the research, so i don’t have to get traumatized. greatly appreciated.
Exp on death around 200 points, on damage taken 50-60 exp. Gold lost on death is 10% of current gold.
I could swear my pants cost me about 5 silver on death. I’ll have to “test” and get back to you.
yeah now i have heard 3 different versions 
Some hard facts would be nice. Might do some testing myself… someday…
Ugh…
Lvl 30
89s 48c before jumping…
80s 53c after
So roughly 10%
I need new pants
10% seems to be correct.