Finally someone has the boldness to not dance around the elephant in the room.
People whose egos are crushed after one loss

The ones that insist on a rematch after you beat them twice are even more pathetic, but i never understood this rematch thing. If everybody insists to do everything twice, our lives are halved..

Thank you, waffllemaster. Honestly, sometimes I'll decline a rematch simply because I think my opponent is turning this into an ego fight -- like if they say "give me another chance, coward." If I accept I know I'm dealing with someone who will attatch his self-worth to the result, and I'm not so sure that's the kind of person I want to play. I want to play someone who's just looking for a fun game, not someone who is trying to "prove" something to me, or looking for an excuse to brag, by beating me.

Some people say it's unsportsmanlike to not offer a rematch.
Then they call you an idiot.
Some people say trash talk is friendly banter.
But when they lose it's not so friendly.
Some people say they're competitive.
But the spirit of competition is nowhere to be found when they lose.
I don't play for the competion myself and when I meet someone that is competitive by their own admission I don't expect much.

Geez, nobody's Ever been insistent about a rematch with me... seems pretty obvious why: you guys with "good" ratings are more of a challenge -- more "worth" beating. And more likely to be presumed to be all full of yourselves when you win. Makes me really glad to be a mediocre chess player. (Heavy hangs the head that wears the crown.)

Wafflemaster, good post! I think you forgot the last step: they go on the forums and whine about it!
Now I know most of us understand everyone loses sometimes. Most understand losses have nothing to do with your self worth, and certainly no one is owed a rematch. But there are people who cannot deal with ONE loss. After they lose ONE game their ego is shattered and they feel they're ALWAYS entitled to a rematch. The pain is so much that they project their personal feelings of low self worth onto their opponents. They use all manner of unvirtuous labels like unsportsmanlike, coward and thief. They even go so far as to stalk their former opponent in hopes of justifying their narrative. Any adult chess player who is worth their salt has lost thousands of games and wont take it personally, especially a blitz or bullet game.