You don't have to be crazy to play chess, but it helps.
will chess really make people go insane?

No. I believe chess (or other mentally straining things) can bring out those mental weaknesses of people. If someone comes out as "evil" then it wasn't chess which made them that way. Perhaps playing a Karpov-style positional squeeze sadistically game after game has enhanced their personality trait, but the player was "evil" before they played chess - chess just highlighted this nature.
Same goes for other traits too. If someone is constantly sacrificing pieces and not playing the needs of the position, then perhaps they are forcing their ideas on the board and might be impatient people by nature. Chess didn't make them impatient, it merely highlighted this trait.
"Chess doesn't drive people mad, it keeps mad people sane." - Bill Hartston (British Chess Champion and Journalist)
Chess is making me mad these days .More violent .I just become mad ,throw things ,punch and bang the wall .Completely crazy and its making me lose my control .Chess I think will make people unfriendly i guess .

Chess is making me mad these days .More violent .I just become mad ,throw things ,punch and bang the wall .Completely crazy and its making me lose my control .Chess I think will make people unfriendly i guess .
https://www.chess.com/blog/KeSetoKaiba/rage-in-chess
Chess doesn't make people unfriendly; chess just brings this emotion out because losing in chess can be REALLY hard to handle sometimes. Unlike games like poker with some luck element, or team sports like baseball, chess is a solo game with no luck and you are 100% to blame. This is tough to swallow. Of course, it means any win or accomplishment on your chess journey is also 100% your success too, but chess is not easy and it makes sense it could draw out these strong emotions in people.
Chess is putting them to the test in ways which they likely haven't been challenged before
Well I am still going to play chess lol
lol me too xd ,even though more i play more deppressed i become even if i win , things are getting dark but ok i guess a break for 1 or 2 days will make things fine i guess

Can you imagine a life where chess is the centre piece of yourself?
I would pity the fool…fools
well literally the elite players all suffered in the past, this game was nothing but bloodshed
I see where you are going with this and I won’t drop any names nor have sympathy. They all got what they deserved.
some have even gotten PTSD, depression, or just plain insanity from the game itself and become more delusional as the years go by while others who are crazy play the game as they feel like its one of the only few things that keeps them going or trying in life
Chess is making me mad these days .More violent .I just become mad ,throw things ,punch and bang the wall .Completely crazy and its making me lose my control .Chess I think will make people unfriendly i guess .

however guys those are only disadvantages of chess : )
think 'bout the benefits too like boost ur brain, it makes man more wiser & clear sighted
Chess is making me mad these days .More violent .I just become mad ,throw things ,punch and bang the wall .Completely crazy and its making me lose my control .Chess I think will make people unfriendly i guess .
i quitted chess 5 months ago when this same situation occured to me ,maybe if u feel like that u should seriously consider taking a break ,
btw i still didnt got the rematch xd (note dont punch me XD,im just saying)
however guys those are only disadvantages of chess : )
think 'bout the benefits too like boost ur brain, it makes man more wiser & clear sighted
u have point but i think anything in excess can be dangerous
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will chess really make people go evil ,unkind, hateful and remain lonely and deppressed??