One "grows up".
How to deal with losing
Although saying that I have been on Chess.com all night before trying to end a losing streak - I can't go to bed on a loss :-/

If it's a fast time control game, I go on to the next one and fight harder. If I lose 5 or more in a row, I might take a break.
In tournament chess, it's much harder to bounce back, especially in round robin events. Exceptionally strong GMs who have been professionals for years have said that rebounding after a tough loss is the hardest thing of all. Quite often, even elite GMs will lose several games in a row.
In Swiss tournaments at least you have the consolation that the next round will probably be easier.

When losing a game of chess, one is forced to accept the fact that he is less intelligent and has a lower self-worth than his opponent. How do others deal with the fact that losing in chess (or any competition) is absolutely unacceptable?
if you want to get through life a lot happier, I would get past the "losing is unacceptable" thing. or you can go to A_L_I_V_E's post about greatness. There you and others can frolic, and revel in greatness, talk about greatness, dream about greatness, live greatness, eat/drink/sleep greatness.

If you play chess, you will lose. If you don't want to lose, you can do what Fischer did and give up playing.

If you play chess, you will lose. If you don't want to lose, you can do what Fischer did and give up playing.
Or create another account, play 1 game using an engine, and then quit. Then you can say you never lost.

First of all I would begin with divorcing me egocentricities from the game. Its certainly is no reflection of my worth as a person nor of my intelligence. The logic runs like this. I am a human. I am imperfect and prone to aberration, that means I make mistakes. Its illogical and unreasonable to think that i will not make mistakes, its therefore inevitable that I will lose games. How should I deal with this fact? I will try to use it as a learning process and find out why I lost, what my thought process was and how I can avoid it in future.

If you play chess, you will lose. If you don't want to lose, you can do what Fischer did and give up playing.
You are obsessed, aren't you? Unhealthy to hold a grudge against people you never met. Also stupid, if you ask me.

Kasparov lost many games in his chess career, I am sure. Does that make him less of a great player? Less intelligent? Not to talk of having a lower self-worth? Than his opponent who I'm sure he beat a dozen times afterwards?
Simply no.
From losses you learn and grow. What can you expect to learn/or improve if you win every game you play. Where's the challenge? The goal? The excitement? It's all gone otherwise.
It can be a pain at times, and who knows? You were most probably having a bad day. Don't let that disturb you the slightest.

When losing a game of chess, one is forced to accept the fact that he is less intelligent and has a lower self-worth than his opponent. How do others deal with the fact that losing in chess (or any competition) is absolutely unacceptable?
No. On that occasion your opponent played better chess than you. Intelligent in a narrow field over a limited time frame.
You learn from your mistakes and (gradually ?) improve. Chess engines are far superior to most humans but they can't polish shoes, wash up etc or do mechanical improvisational (creative) tasks like using elastic bands and bits and pieces to fix random items. Chess deals with fixed starting rules, but human existence requires continually changing starting rules and do creative stuff that makes competiting in an extended puzzle like chess seem not very important.

If you play chess, you will lose. If you don't want to lose, you can do what Fischer did and give up playing.
Or create another account, play 1 game using an engine, and then quit. Then you can say you never lost.
Thats one of the stupidest things ive ever heard

If you play chess, you will lose. If you don't want to lose, you can do what Fischer did and give up playing.
Or create another account, play 1 game using an engine, and then quit. Then you can say you never lost.
Thats one of the stupidest things ive ever heard
If you heard me type that, i am impressed with your hearing.
When losing a game of chess, one is forced to accept the fact that he is less intelligent and has a lower self-worth than his opponent. How do others deal with the fact that losing in chess (or any competition) is absolutely unacceptable?