See we can talk about the problem all our life...but what matters is..are you ok to just leave this as is and make peace with it? may be not!! as we are humans sometimes we wonder, we argue, we fight, we want to change things...we want to try...not once many times...thats what I was referring to... Yes he may say no...but sit right infront of him and start playing the board games with kids....what doyou think may happen? Or you can totally try the opp way i.e ignoring him, not responding, just move away when he talks or there in the room...its like giving negative treatment to get his attention...though it may have other side effects, one effect which we want may be that he starts wondering why his wife n kids dont even want to see him or face him...may be you will have a ground to initiate the talk about his behaviour at that time when he asks you guys whats wrong and gets angry.... all these we can just try..because we want to do something about the situation we are in!!! its not mandatory. if you are willing to make peace with it and mvoe on in life...as you have done till now...thats another way too....which ever sounds good for you or which ever sounds positive.