No way I'm resigning, as long as I've still got chances! 😁

I suppose one could view an opponent who doesn't resign as doing so because they are hoping to swindle a draw or win, but it may simply be the case they are respecting your victory and giving you the opportunity to play mate on the board. From my own experience, and this was years ago, people would get annoyed if you resigned a move or two away from mate, taking away from them to actually play out to the win.
I don't think one should automatically presume that their opponent is being anything like a "poor sport" just because they are giving you the opportunity to play mate.
I hope you have heard the expression "Nobody ever won a game by resigning." At lower levels of chess people make so many mistakes that having a losing position does not mean you will lose, as you can almost count on your opponent making a mistake if the game goes on long enough. I have heard this said time and again to younger chess students. Also, it is true that they need the experience playing the endgame, as many of their games don't go that far.
It is possible that as they get older and their level of play increases these old indoctrinated habits of not resigning may stay with them, leading them to play on in resignable positions. However at a certain level resignations become much more likely. Another common saying is "You never mate a Grandmaster." That is because at their level they will almost always see the mate coming and will resign before it happens.
Now all you have to do is become a Grandmaster and play other Grandmasters and you will no longer have the problem of people not resigning against you.
Seems kind of arrogant to believe at 1400-1500 you aren't going to blunder something even on a winning game. I'm only around 900 but I watch streamers and until you hit around 2200 people are always blundering stuff. So if I ever (which I doubt I will) get to that level I won't resign either.
I think it's a lack of respect and a waste of time to not resign
a) if it's a waste of time, you don't enjoy the game, quit (let me know if you figure out a way to follow this advice because i feel like a heroin addict having a bad life)
b) what makes you think you deserve their respect? (not trying to be rude, but.... prove it. that''s sport. which chess is.)
Most games played on chess.com are speed chess, there is especially a lot of 3/0, 3/2 and 5/0. As long as you have a reasonable amount of material, or even just 2 heavy pieces, you never know if you have lost yet. As long as you get your pieces active and start pressing your opponent, you can "make your own luck" and get a swindle by creating a mating net or something like that. Chess games are not over until the game is history and you are out of the playing hall, or in chess.coms case, the game is in your games history
Its quite late for me right now and Im going to bed, but tomorrow Ill show a master game played here as a example