the reason why Gambling is considered bad by majority of people is because of all the risks and chances of loosing money involved in it. which I think are true. but in actually gambling is only bad if it is done too much. excessive of everything is bad for us. not just gambling.
That's the point, excessive gambling habits are the reason why most people consider gambling bad because they don't gamble but they see how gambling ruins the lives of many around them, they lose all their money, sell their properties, and do all sorts of things that they shouldn't be doing just because of gambling, and these things create a negative image for gambling in the eyes of a society where people are not very open-minded and see things very differently.
If people take gambling as a fun hobby and an entertaining activity, spending a limited amount of money and time on it just to pass the time or even to try their luck, gambling would never have a bad image in the world. You don't get ruined or lose everything you have if you gamble responsibly and not excessively.
Not a few people gamble excessively, but in my opinion there are many people who gamble excessively so that they experience an addiction which is clearly detrimental to them, some even commit crimes, borrow money, and also sell the property they own as you said. . This happens because they themselves are addicted to gambling which leads them to ruin their lives. Many of them gamble inappropriately.
that's true, also the many people who have a bad view is because many people gamble excessively to the point that they experience problems in their lives, so the bad image of gambling is because the players are irresponsible by gambling, if they can be responsible well then It's unlikely that many people will view gambling negatively. Moreover, for those who have problems because of gambling, it is because of themselves, there is no element of coercion from the casino for them to play continuously and spend all their money in the casino, with the problems they have because they themselves are gambling excessively.