What you said is just like reading a story in a book but in reality most of the time all gamblers will come back for gambling to get back what ever they lost. Even though they made a profits earlier but if they lose some recently then they want to take that back so they will try and try until lose all of them.

But most people are never satisfied from what they got, although if you win big amount of money on the next day or may next week you will try it again to win that much, thats why if you can control it not to play it again you wont lose that much. But gambling is too addicted, once you start its hard for you to let go 

it doesn't matter if you win once or twice, you should always check your results in the long term. for example check your total invested against total profit in a month or 30-40 days period to see how much you have lost and how much you have earned through your total gambling.
then you can easily decide whether or not gambling is wrong for you.

gambling is not bad until you dont start loosing money you need for a living gambling just for fun with small amounts is ok its like playing any other games

It is always best to only gamble for recreational purposes. You always have to think of another reason besides scoring a lot of money when you go to the casino. Some people go as a social activity with friends. Others go every week solely for entertainment purposes. In Canada you can always ban yourself from the casino and once the time is over you can start gambling again.

And there lies the problem.. usually the experience turns into a form of habit.

And it just gets ugly from that point out, people lose control and sometimes sell their house or do crazy stuff.

That is good. He just gambled the amount of money he afforded to lose. It is just for fun. If he wins, he will be happy. If he loses, he will accept it and go away.

If any one start gambling to make a big money then very surely they may lose money in gambling. But it also depends on what kind of gambling people choose, if one want to bet on sports then their are chances of wining but want to bet in dice games then most like they will lose it because it is purely based on luck.

Gambling is bad to the people who always loss a big amout of btc and gambling is good for the people who always have luck in playing it.