Do you show mercy?

I was getting outplayed and was on my way to lose but then my opponent makes an obvious blunder with his queen, giving me a winning advantage. He offers me a draw and I accept, since I feel like I don't deserve the win.

Unlike flagging or beating your opponent with a trick, I didn't do anything to actively gain the advantage. Plus, I am not too worried about rating.

What are your thoughts? If you would have declined the draw, how much do the rating points matter to you?

It's unsportsmanlike of him to ask for a draw and you are easily manipulated. It's not your fault he blundered.

I respect your opinion although I'm not sure I'd call it unsportsmanlike. Grandmasters blunder tactics in a winning position all the time, and even they offer draws (some opponents even accept). Would they also be considered unsportsmanlike?

No. No professional players accept draw when it's obvious one is winning. They can be penalised by local chess federation if other players reported them.

Okay let's not get carried away here. I was talking about online games where the games aren't FIDE rated and the stakes aren't as high. Even so, in the Harikrishna vs. Nepo match in STL Rapid and Blitz, Harikrishna mouse slipped a rook and it was actually Nepo that offered a draw, which was accepted. Doesn't look like he got punished for that.

All I was wondering was if you would take the draw or not. I would understand if a beginner was told to play on to win or if you never let your opponent off the hook, but in my case I had no right to win and there was no way I could come back against a 2000 unless he mouse slipped. From my perspective, it's sort of established that my opponent and I will play good moves, and to see your opponent throw away his good play with one lapse makes me feel undeserving. He put his queen right in front of mine. Both of us know that his blunder isn't reflective of his actual skill. If you look at lichess, they have a takeback option in their games, so this kind of thinking isn't that strange.

Wasn’t my fault he blundered. Now if it’s an obvious mouse slip I’ll accept the draw. But I won’t offer a draw, and I don’t expect my opponents to take the draw either. 

Fair enough. If I was in a winning or drawn game I probably wouldn't think much about the draw offer and just play on. 

That was a mouseslip.

It's a little different.

Once I was in an online chess.com tourny (not, like a professional one. Just saw a rapid arena and decided to join? I was gonna take their rook, check them, and take another rook due to a skewer. Instead I mouseslipped the entire rook, so instead of being a rook up, I was a rook down 

Nope, unless it is a mouse slip.

Same. Whenever he does something wrong, I show him what I think the best move is (though I'm probably wrong.) Then, I'm basically playing myself instead of my brother lol.

lol exactly

My brother doesn't either much, but I force him to anyways.

For some reason, though, it's more entertaining to both of us when I pretend it's Gerald playing him.

The whole concept of "mercy" is goes against the very nature of chess. Unlike most other games, in chess you can absolutely dominate your opponent, making one great move after another, only to lose the game instantly with one terrible blunder! That's how chess works. It's a great game, but a cruel one. But we own our victories--and our defeats! We, and we alone get the credit for our good moves, and we live with the results of our mistakes. 

The only exceptions I can think of is when you are playing with a child, or a novice. That's not really a competitive chess game

i show mercy, wheneveri have 1 move checkmate, i decide to go for the 3 move checkmate