Yes you are mate, we must gamble for fun only and not have the mindset that we can earn daily a big amount of money because in the world of gambling we can not predict the outcome of our every bet. Sometimes we will win and sometimes we will loss. So it's better to aim happiness than profit. Here in in my country some gambler loss big amount of money because they are aiming profit. Once they put a bet they will mind that they will win and if they loss then they will double or triple their bet.
Those who gamble daily are addicts and don't gamble for fun. You will find them more than those you are talking about. Gambling is entertainment but when it becomes addiction the gambler himself won't be able to recognise this issue. Everyone starts for fun, adrenaline rush, excitement and passing time then when they start losing they become agitated and want to get the money that they lost. This is where the problem starts. If anyone is able to cope with that problem then they become social gamblers. That is what everyone needs to do.
Some times, some people who gamble for fun also become addicted in the long run if they do not put things in the check because some of us gambling for fun cannot sometimes put our gambling life under strict check by allocating specific time and funds to gambling with and in doing that, we have to follow that decision wisely and not loosely that could lead to addiction.
So not everyone who gambles for money may end up becoming an addict since the situations that lead to addictions are multiple and not singularly allotted