There are many lengthy threads about that. The consensus is that people have no obligation, moral or otherwise, to accept rematches and they aren't cowards for not accepting them.
Why do people call me a coward when I decline a rematch?

Well sometimes a "lucky" win happens and when an opponent wants a rematch and the other declines to go off to play somebody else it kinda proves they are scared because they know they got lucky. Thats why somebody would say "coward" now there is other reasons to decline it's not illegal but if you have the time and you're already playing. Accept the rematch. Not like you have anything better to do if you're already playing chess.

This has only happened once but I've heard of it happening to others and I want to know why anyone would call someone who declines a rematch a coward
On the chess.com subreddit i have seen much worse than that. but idk

Well sometimes a "lucky" win happens and when an opponent wants a rematch and the other declines to go off to play somebody else it kinda proves they are scared because they know they got lucky. Thats why somebody would say "coward" now there is other reasons to decline it's not illegal but if you have the time and you're already playing. Accept the rematch. Not like you have anything better to do if you're already playing chess.
In lower levels like 1300 continuous rematches doesn't mean anything. But in our level, rematching more than 1 time can be cowardly. I myself learnt this bitter experience when I rematched a 2300 Bullet guy 6 times. Initially I was 2 - 1 when tally stood at 3 games. Now, he has learnt of my style and now the score is even: 3.5 - 3.5 . Thats why I dont even rematch anymore.

I never ask for rematches.
I only accept rematches when I thought the first game was both very close and could have gone either way and had unusual positions. Otherwise, what's the point with so many players online and near instantaneous new game search time, seconds.

There are over 200 million Chesscom members. I love the variety of playing completely different opponents in every game rather than accepting a rematch, usually against an angry opponent you just checkmated.
Some people are immature and foolish. You owe them nothing, There's nothing wrong with accepting a rematch, and there's nothing wrong with declining one. Your choice!

Some people are immature and foolish. You owe them nothing, There's nothing wrong with accepting a rematch, and there's nothing wrong with declining one. Your choice!
Exactly. Personal choice. It certainly shouldn't be a topic people get their knickers in a twist about. 😂

Why do some people make wild accusations (of cowardice, etc) whenever a rematch is declined?
The most common reason is that they are just trolls pretending to be fixated on rematches. They don't believe their own nonsense, no more than you do. It's just an excuse to troll.
But there is a less common, and more sincere reason.
People with pitifully weak egos simply cannot admit that they lost a game of chess.
So they first demand a chance to show that is was just a bizarre fluke, and then when they also lose that second game they will accuse you of cheating.
Anything to protect that fragile ego.

> Why do people call me a coward when I decline a rematch?
I know one guy who is going to love this thread
It's not a sign of cowardice to decline a rematch. Don't trust those people, I've dealt with those people, who has a similar mindset.

And where does it end? If you beat them again in the rematch do you need to play a third rematch? A fourth? A fifth, without being branded a coward? 🤣
It's absurd that anybody could get annoyed over a rematch refusal, unless they have serious anger issues.

> And where does it end?
There is one guy who thinks that 3 games "solve da problem" 100%
> It's absurd that anybody could get annoyed over a rematch refusal
The guy did even create at least two threads here about "cowards" declining [his] rematch requests

Anyone who calls u coward doesn't even deserve getting rematch and is just being a bad loser, also if ur the type of person who doesn't like playing a game just after u did 1 and first review your games u wouldn't like doing rematches immediately
This has only happened once but I've heard of it happening to others and I want to know why anyone would call someone who declines a rematch a coward