For me, It's not that important if you track all your records in gambling or not. I'm aware that it will be helpful for some gamblers because they can monitor their total spending amounts most specially if they know their limits and needs to control their money to avoid losing much but for other gamblers who used to gamble and majority of the time they played is all about losing, It will be a bit frustrating because it reminds them of things that should be forgotten and never looked back on.
Of course, this will make them frustrated with the losses they have experienced, especially if the losses were very large. But they only feel this frustration for a short time because when they return to gambling again, they will not feel frustrated but will try to recover their losses. Having financial records about their gambling can actually help them to see how much money they are using for gambling so they can start reducing their gambling activities. But what happens is that there are still many gamblers who don't pay attention to this and instead gamble more often because they have the hope of recovering their losses. This is where they really need to realize that by recording their gambling activities and seeing how many deposits and withdrawals they make, they can conclude that gambling is not suitable for them. They don't need to gamble too often.
If they did not keep track of their records, it is possible that they would simply set aside a limited amount of money for gambling in order to keep their own losses under control. It's depressing to know how much money you've lost over the course of your gambling career, but it could be a sign that you need to stop gambling or put some restrictions on how much you gamble.