Letting people take money off the table ("ratholing") is universally derided, but it shouldn't be. There are three different parties to consider, and all three dislike ratholing, which is why it's usually not allowed. The first party is the casino. Casinos want as much money in play as possible because that increases their profits. The second party is the winning players. They want as much money in play as possible because that increases their profits as well. The third party is the losing players. Because these players are degenerate gamblers and are mathematically illiterate, they want a chance to "win their money back". In truth, these people shouldn't be sitting at the table at all, but luckily for the rest of us they sit anyway and fund our hobby.
Accordingly, casinos forbid ratholing and both types of players applaud, both the smart and the stupid.
From a sportsman's perspective (rather than a professional's perspective or a degenerate's perspective) there's absolutely nothing wrong with ratholing. Deciding how much money to risk is an important part of wagering, and every player should have every opportunity at the start of every hand to decide how much money they are willing to risk at that point in time. Cries of "you have to give me a chance to win my money back" are fundamentally misguided; the first rule of poker that anyone should learn is that money ceases to be yours as soon as it goes in the pot. Money in someone else's stack belongs to them; you have no claim over it, and not a single person at the table owes you anything, let alone the obligation that they keep risking as much as you would like them to.