I don't see any problem there. Its true that we shouldn't gambling in front of children as it may effect them badly. But when its comes to mature people like you and your wife, there's nothing wrong until both of you guys can control yourselves, follow the discipline as well as able to manage economical status and become so responsible as gambler. Nobody need to quit, just mainly focus on primary income source and do gambling less or stay within limit. Don't spoil family moments , only gambling when get free time or children aren't around you.if you guys can't handle and worry about Ensure the healthy environment for children, then both can quit gambling together, otherwise there'll be a quarrel between you about this matter. So that is my suggestion
Control would really be crucial and its true that as long there are no compromises when it comes to budget and overall financial aspect then i dont see for it to be a problem.
Just make it sure that you and your wife wont really be able to reach into a point that you would really be spending up that much money because you are really that involving
too much about gambling. If you do have both those kind of control then it wont be an issue but if it turns out that things to become that gradually making those impulsive
actions then it would really be something that could bring out that huge problem later on on which it would really be entirely affecting you and your entire family
on which this is something that we dont really like.