If a gambler continues to pursue gambling after being told clearly, it is certainly dangerous for him. It is true, however, that if one gambles in pursuit of money, it will never bring good results, rather he will only lose and never win. Most new gamblers are very inexperienced when it comes to betting, which is why they always end up gambling to make money. But knowing it can destroy a user and player even if they don't know about it, they are not careful about it and at one time lose their money and get mentally broken. But it is best to use small amount of money for peace of mind while gambling, if luck is good in future then eventually you can win more money from small amount of money.
Gambling is mostly probability and so it's not a good idea to be bent on gambling or trusting in gambling because you may most likely end up disappointed by the time the results is out and it's not what you expected it will be, new gamblers are the once who always want to make gambling a source of income a d they end up messing things up most times because some of them actually gets greedy and before you know it they begin to loose more money trying to gain or recover that which has been lost but then it's actually true that you can still win some good amount from gambling even as a first timer with or without any good strategy so it's mostly a thing of luck most of the times and not about how well skilled you are .
Some times its not necessarily the fact that the gambler is experienced or not, neither is it by staking power or all other factors, it might just be absolute luck playing out on them and so Gambling isn't and shouldn't be considered dependable at all.