Well, just to provide a single example, my wife is totally disinterested in games. Absolutely doesn't care, to the point where if someone tries to motivate topic X via games she ends up feeling that topic X cannot have any value to her at all. By contrast, she is very interested in math, and wishes that at school it had been presented as other than a collection of facts to memorize and processes to learn and apply.

I know of others who have a similar attitude to games, and now, as I approach 50, I can't care much about them either.

Games aren't "Real World."

If you want "Real World" motivation then find some stuff from the real world.

To add some context, I am passionate about putting things in context and making them relevant. I visit schools to talk about uses of math, and explaining how these subjects are anything but isolated and irrelevant stuff to learn and hoops to jump through. I've given talks in venues such as the West Yorkshore Playhouse, the Royal Exchange in Manchester, the Criterion Theatre in the West End of London, Navy Pier in Chicago, and others around the world. I give examples from GPS and SatNav through intercepting drugs couriers and on to gene splicing and DNA analysis. I talk about finding cliques and connections in social networks, and then apply that to detecting plaigarism and ranking web sites. I talk about weather forecasting, roulette, life assurance and debt management.

I mention them in passing when relevant, but I don't talk much about games.