Trish is a girl, but Yennifer's a woman. 
You're goddamn right.
World building 
"CIRI IS IN MORTAL DANGER ZOMG"
"Hold up, some cunt challenged me to a fist fight, then I gotta find that old hag's frying pan".
I'm not talking the main-quest (which yes, with the amount of side-objectives is pretty dumb to have it sound SO DAMN URGENT OMG). I'm talking the contracts, in general. Also in the books it takes Geralt like 5 novels to
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save Ciri from being used by her father for political reasons, etc.
So really, the whole side-quests being in the thousands is kinda fitting with that.
what games
I just don’t like modern games or games period too much and tell it like it is. 
“Give game a chance” = play this game for 30 hours before it gets good. Thankfully Baron quest is at the beginning so I don’t have to do that bs here.
You tried Sonic Mania and hated it for various reasons while half this board liked it because it was a "return to form"/going-back-to-roots for Sonic, for instance. I like you, Himu. But everyone that has said you have flip-flopping opinions is right. Depending on what side of the bed you wake-up on in the morning, your opinion on things change.
"I don't like modern games!"
Ok, then why do you "suffer" them? Why bother making this thread if you were already in the "ok, I'm trying to play this because everyone says it good despite thinking all modern games suck!" camp?

The Baron Quest isn't even the best part of the game. But again: If the world isn't for you, then feel free to stop. But I already knew you were pretty much dead-set to shit on the game at the earliest convience you could get to fit your "all modern games suck" narrative.
Also I'm nowhere near mad. If anything I'm

so hard my eyes are going to fall out of my head.
Crafting is actually the most OP thing you can do in Witcher 3. Eventually, you get buffed enough from potions that you gain and regain more health than lose it from toxicity. For Death March difficulty, the most viable build is built around alchemy, crafting, and getting recipes.
Which is what all the loot you get feeds back too. You get sooooo much useful shit from looting random containers anywhere. That does eliminate the feeling of finding something awesome, but the trade off being any container being worthwhile makes up for that in spades.
One skill you can get makes it so your vitality regenerates at a fixed rate for 20 real life minutes if you eat or drink anything. That makes finding water or a loaf of bread in a random container worthwhile. Ive found good potion recipes in random containers.
As for exploration, every part of the game map is used for something or you can find useful things for Geralt. Witcher 3 uses its landmass to the fullest extent. You can stumble into areas and start quests you didnt know about, find useful loot, or a place of power, which gives you a skill point and long term buff.
The side quests absolutely add to world building. Trail of treats is a fantastically grim idea introduced in The Bloody Baron questline. Early on, a hunter calls himself a freak, as Geralt, you can empathize with that. Turns out, that hunter was gay and shunned for that. Tons of sidequests that play around with classic fantasy and fairy tale tropes, subverting them.
Rebuilding Dandelion's club in Novigrad involves a really dark murder mystery, with cult type shit being part of it. Saving Dandelion, you have to put on a play that revolves around what citizens in Novigrad want to see. A baunted house ended up being a god being thing haunting a woman's dreams for fun.
I have never played a game that succeeds with world building and role playing like Witcher 3 does. Every minute spent feels worthwhile.
At the same time, this game wont be for everyone. It doesnt have the same highs or lows of the majority of RPGs, the pacing and amount of content can be offputting at first.
Hardly. I linked that Steam guide I followed in here. It used like Quen maxed on down, Igni for like 3 levels (to get the "Flamethrower" mutation on it) and the other signs to slow down ghosts (and hit them)/etc.
I think it only buffed Alchemy to lower the toxicity risks.
Ah, nah. Sword all the way down. Signs three levels down. Alchemy to get Acquired Tolerance to lower the Toxicity level (well, raise it actually).
Honestly, with my like 250-ish hours into Deathmarch and doing all the content this past fall, I don't think I used the Witcher concoctions outside of like 2-4 particular areas. All you need is bombs, the Quen regen health shield, food (which you can get in tons looting like everything), and the Witcher sword oils to annihilate everything.
(Also that guide is right: Cross-bows are utterly worthless until you get one of the school Cross-bows, but you have to level to like 30 so yeah... kinda a sour-note with the game on Deathmarch, but you only use the Cross-bow to pull aggro or take fliers down to hack them, so...

)
And yeah, the Dandelion bar/prostitute-house-turned-theater was a great quest. Especially if you've read the novels (or just read the signs between Dandelion and Priscilla).
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Shame that you find out at the end of that that she'll never be able to sing again because the damage to her vocal cords being worse than it was. Dandelion and Priscilla singing together. :'(