Once you get a reputation for playing out positions more than a rook down, you may have a harder time getting tournament invitations, sponsors, collaborators, etc. If you're an amateur, soon even your friends won't want to play you.
I know a kid (age about 10, rating around 1900) who doesn't resign ever. He'll be a couple of pieces down against a player 400 points better and still play on.
It doesn't make him popular, it wastes the time of the opponents who have to sit around for an extra half hour and we even have to warn visiting players to expect it. His opponents will sometimes create 3 Queens or similar just to make him look stupid.
If you get a reputation then others will start to treat you like an idiot. Eg one strong player recently played out the full 50 moves of K+R vs K+N against another strong player, possibly to "punish" past behavior.
it's about personality. some players do play on for a while and it is part of the rules and has nothing to do with tournament invitations. You can play for as long as you want within the rules, and every once in a while, people do just that.
Others will resign very prematurely and they say so. They say they just didn't "feel" the position. Computer analysis later on says they are equal in position, though.
If Carlsen started playing out all his games do you think he wouldn't be invited into tournaments?
He'd be in the tournaments, it would just be a waste of time for him to play out all the games, when he is certain to lose. instead, he resigns and relaxes his mind and winds down before the next game.
If Carlsen started playing out all his games do you think he wouldn't be invited into tournaments?
I think that if Carlsen had started out in life being a brat, he wouldn't have got much support to get to where he is today. Besides, other players are not Carlsen. E.g. Topalov seems to receive fewer invites than other comparable players. Could it be because of his (and his manager's) abominable behavior during two WC matches?