Normally, people will always talk about other people's habits, whether it directly affects them or not, so it shouldn't be of much concern to a gambler when people talk about their habits or their participation in gambling, well except my gambling habits is a problem to me or to them and is either affecting them directly or indirectly.
But as long as I know that I keep my gambling habits in check and I try to be as responsible as I can be in my gambling, then what others say or thing shouldn't be of importance and concern to me.
though at some chances we are giving consent to our love ones so they can support nor advise us whenever we have troubles or we are in success ,that is the importance of other people but in totality ? idon't care about what they say to me.
In a situation like this, it's important to reassure them and make them understand that you're fully aware of the risks associated with gambling and that you're only doing it for fun. Because one shouldn't discard all criticism, there are some that coupd actually be helpful to you.