Why prevent draws?

@Strategymaster the point is why this is even a possibility to begin with. For instance in any sport in a tournament scenario, it would frequently make sense for two evenly matched competitors to simply draw and then look for easier points against softer targets. But this, bumhunting as you'd call it in poker, is far away from the spirit of healthy competition or sport, so it's a nonstarter -- you don't have it in games.

And of course there is also a secondary point. With "professionals" of the sort you're alluding to, there would be no professional chess to speak of. Once Kasparov's dominant and aggressive fashion of chess lapsed and we entered a brief phase of "professional" play we started to see a decline in the very tournaments that foster and develop professional play. It was only thanks to Carlsen and kind, at first as wunderkind spectacles, and later as uncompromising and unrelenting chess that we started to see a big growth in major events. And that trend continues to this day.

2000-2009 saw some 81 major chess events, with a huge chunk of those coming in the Carlsen era tail end -- 27 in 2008-2009 alone. Since 2010 we've already had 104 strong events this decade and that number is likely to only continue to accelerate.

en.wikipedia.org/wiki/List_of_strong_chess_tournaments

I feel that in chess, unlike in Go the iniciative of the first move is completely free regarding the score system. For instance if you have the first move in Go you start 6,5 komi points behind.
Something similar in chess would mean that a draw implies 1/3 for white and 2/3 for black (or 2/5 white vs 3/5 black).
The current system of half point each player, encourages white to play for a draw against a stronger player and also while ahead in the tournament table, etc. It also incorrectly asseses the effort of drawing with black in a 5b 4w nine round tournament.
So calling a draw what it is, for instance 2/5 white and 3/5 black would dramatically reduce the amount of draws.

@OhNoMyPants
The issue is that in chess the perfect result is a draw. Whatever you claim might be right, but from a mathematician point of view draw is the right result. Whether you get it from more exiting play or not, draw is the final result. So if both players agree that they cannot achieve more so be it. Boxing has always a winner, while in chess even a draw you need to figth for. At least in preparation, and ever single draw you see, even the ones blitzed out has a lot of effort put into it. And by denying that you disrespect their effort. I know not all draws are like taht but you cannot punish all by some misusing it

@Strategymaster Chess is not solved and it's entirely possible it's a forced win for white. It's even possible that white is in zugzwang from move 1 and the game is technically a win for black. And boxing does not always have a winner - there are draws. And indeed with perfect play from perfect opponents in boxing we can rest completely assured the result would be a draw given that it's a perfectly symmetric game with no inherent advantage, or disadvantage, to either side. That is also true of most all sports.

The point here being that appealing to some ideal result is, in my opinion, not very compelling.

It‘s a refusal to work or put it that way: the fear of losing

„Losing hurts more than winning is nice.“

Draw!?

Look at it this way
If your two floored house that is made of wood is on fire and your baby daughter is unconscious up steers and her door is locked suddenly a draw does not look better than a loss. But you must Win
In chess a Draw is just a shared loss. If you don't like it do not play to lose
If you say prearranged draws do not count someone will make the last mistake

@Stephenson very imaginative :)
However, it's not clear that a draw is a shared loss. It may feel that way to you, but that just means that you specifically should not play to draw - it doesn't mean that others should be prevented from drawing or that it is also a loss for them - this thread is about preventing draws in tournaments/GM games. Unless I completely misunderstood your point, which may be possible

You misunderstand If draw it means only that you can't win and neither can your opponent. I prefer to look at people as if they are good people not as loosers.
If you say prearranged draws count nothing people (GM's are people also) people will play more fairly and to win. It gives unfair advantage to count draws as 1/2-1/2 just make it zero. for both players. If you do not like the rule play somewhere else
I have a chess database that has chess games from country (x) of the GM games played for charity 50 total 45 were draws in under 4 moves
Saying it is for charity does not make it less of a tournament

@Stephenson What if both players do not make any mistakes and the game eventually becomes an insufficient material draw? Is this also a shared loss?

Yes shared loss. Any game can not be played perfectly by humans If you just say draws count nothing someone WILL make the last mistake. post any GM game where both players played with no inaccuracies. with the names of players the Tournament name so we all can see and see that no computers did it.
come to think of it they will probably screw up also you or I just would not see it.