Wasting time on gambling even after learning the nature of dice games is not very smart of any person. Even if someone plays dice without betting any penny in the beginning, this does not mean that after some time, he will become a dice expert and win all the gambling games. According to my point of view, it is pointless to play dice without having bets when one has to gamble ultimately.
Usually, playing or rolling dice is not even a game of fun in itself unless you are actually doing to achieve a particular aim which is either you are playing a game attached to it and looking forward to win, or you are gambling or betting in a way, or you are just having some fun that is linked to daring.
At the end, no one can actually just pick dice and just start throwing to catch fun. However, what el kaka said is basically switching to a bet with better opportunities than dice, which he must have seen a reason for it if he enjoys sports and I see reason to that anyway as they are both incomparable.