Cancer Survivor, writing about Health and Fitness as you age

My younger son was on a "Life" kick, The Game of Life that is. So I did a little experiment recently where, when I landed on "Get married", I put another girl in my car (pink character). The first time I did it, both my boys said I made a mistake and gave me the blue character. In retrospect, I should have started a conversation then, but I was more than a little taken aback by their vehemence. I tried it again a couple of weeks later, and my younger son was the only one playing with me. I said I'm going to put another girl in my car, because "That's ok too", and went about playing. He adjusted to that idea. For someone (me) who has to manufacture opportunities to discuss, really anything outside of video games with my sons, this seemed a fairly easy way to start talking about non-traditional families. I would love to hear what other parents think.