Only if you dont exceed your limits.
You can gamble and win or lose, but dont do it too much, even if you win a lot, because luck can change anytime.
That should be correct. If one know what is doing and how much his/her limit to lose on a given day then their shouldn't any issue in gambling because it is some kind of entertainment for some people but if this entertainment become a full time job then it will be wrong for every one. So just gamble to pass the time some times should be fine.
The actual problem with the gambling is no one will stick with their predetermined plans. Even the limit of losing for a day if crossed, many people continue that gambling of of greed or to cover the loss.