I very rarely notice that someone says something about me, or I simply do not pay attention to it. What I do, what I wear, where I work and everything else is only my business, my well-being will not change from someone's opinion, I will not live better just because I will try to please others, and if they do not like something about me, then it is not my problem. I perceive someone's opinion about gambling in the same way, I know that there are many people who consider gambling to be something bad, I will not argue with this, everyone sees what he believes.
Yes, we don't have to think about what people saying about us especially if we don't disturb them or make them angry to us. As long as we can be responsible with all things that we do, we can enjoy our life without thinks about other people. We don't have any business with those who speak up about us especially if they talk a bad thing about us. If we argue with them, we just waste our energy and that can impact to our day and we can have a problem with them. That will never end because they will defend their saying and still telling many more bad things about us so we can not do what we need to do.