Because our greedy will never find a limit and we will never stop our gambling. Only losses will be the stopping point, but unfortunately no gambling site will allow to withdraw zero balances
Well i think its ok to keep some amount in your bankroll but you also have to make something out of your winnings. I know its hard to take it all out and withdraw especially if you're on a winning run so just keep a decent amount to keep playing then withdraw most of your earnings. Treat yourself, your family or your friends.
It is ideal to withdraw almost one fourth of your earnings. Make someone or yourself with that money because it is a money you won unexpectedly which makes you lucky that day, buy something to commemorate that day being a lucky guy and won a lot of bitcoins, it is also good if you can treat your family, your girl/boy friend, and your friends.
I know it is hard to withdraw especially whennyou are on a winning streak, but you can think of something or a push to make it.