Profits are already profits! This cash-out feature in some gambling platforms is new because, in old or traditional gambling platforms, you can't do this.
And many still don't like it. They're given a chance to withdraw their profits while they can if ever they want to pull off their bets.
But if they don't want to take their profits and still want to proceed, it's okay and if they want to continue with the traditional approach.
Profits are profits, but others do not prefer to take it because they want more profits. I know majority does that thing. However, losses might be waiting ahead once we decide not to cashout. That's why we should carefully assess our game if it will be more profitable or not, otherwise we will only lose our profits on hand.
Well, when we have managed to achieve a number of wins, there are two choices that we can take, namely cashing out in the sense of enjoying the amount, no less and no more, or applying greed with the possibility that you can get a larger amount of winnings or you can also lose all the amounts that you have previously obtained, so all gamblers should be aware of this first before they decide to apply greed in particular. On the other hand, what you said about the advice to assess the game before continuing is indeed good, but the problem in my opinion is that even though you see that it seems like the game will go according to your predictions, it still cannot be denied that the possibility of defeat will always be there, and that is the reason why in gambling there should never be doubt and regret every time you want to make a decision.