Like others have already stated, and to answer the original post. Some people just lose interest, Like my dad used to play video games all the time, I even gave him one of my PlayStation 3's and two of my games, a couple of years ago. He's almost 55 years old today. he has more interest today in watching movies and shows than playing any games anymore. Even though his wife is not demanding, he rather spend time with his wife, he enjoys that more than anything. After coming home from work
Of course my dad was never really a collector, he just bought a few games and played them whenever he needed to escape from reality.
A lot of people get tried of video games when their older, and start watching the television more than actually playing anything on it. some don't some people do.
And for the record a lot of women like video games as well in fact I think we have at least three ladies who regularly attend on the forums here as well.