Two things are involved. One is, did your husband understand how gambling works or not? The school question is: even if he doesn’t view gambling in a positive manner, if he wishes to start gambling, will he be able to control his emotions and finances? If you get these two answers, you are covered by the case study. This is your husband, so you are expected to know many things about him, which include his reaction to things that he doesn’t like. You will find it easy to know if he likes gambling or not.
For instance, you will have a discussion with both of you about the fact about the fact that you saw a film that was fully focused on gambling and you found out many things from there, so what is his view about gambling? So from here, he will be able to express his feelings about gambling. You don’t tell him that you are the one doing the gambling because if he hates it, he will definitely be angry with you. That is why sometimes you have to use some strategies to ask other people for ideas without their knowing.
You probably didn't read the OP because you have missed the context of the topic. The topic isn't about the wife telling her husband that he should gamble, but it's about the wife telling her husband that she gambles, which means that the wife gambles but the husband doesn't know, and now the wife is asking whether it is good if she tells him about it or not.
I read what the OP wrote well, which is why I wrote what you see in a bit. I didn’t understand the concept of the topic, but I was taking advantage of the strategies that she can follow in order to tell her husband, and if she knows that her husband is the type of person who hates gambling, she shouldn’t tell him because he will stop her from doing the gambling, and if that happens, she will find it hard to stop. Because based on what she wrote, she already has a good understanding of gambling, and she wants to use this opportunity to inform him if he will be interested in joining because that is the main subject of the topic, so with consideration, you are supposed to know that she is willing to invite her husband to gambling because she thinks it might be very helpful for them.