I'll definitely still be playing ACNL when I'm 45, cos that's actually less than 2 years away... How did that happen? Anyhow, I remember waaaaayyyy back in the day when nobody had a home computer, the internet as we know it (and communities like this) didn't exist, handheld games were limited to a hunk of red plastic called "Merlin" (Google it - it was wonderful for the time and I was totally addicted to mine) Amstrad brought out the ZX Spectrum which had a game called "Fox and Rabbits" (or something like that). I played that game for hours, starting out with x number of foxes and y number of rabbits and seeing how the populations changed over time. Fast forward 30 years or so and here I am, 400 hours into a game I've had for less than 2 months, watching how "my" village changes over time...
I'd love to pass this on to my daughter (who is nearly 4, so a bit young yet), but I can't see that happening given how fast the games industry moves. By the time she's old enough to really enjoy it it'll seem as "old" to her as that Foxes and Rabbits game would have been to the average GameBoy user back in 1990. There were about 8 years between the Spectrum and the Game Boy - what's going to happen in the next 8 years? Mind you, she has my old DS Lite and really enjoys Cooking Mama, so who knows?
As for me, I'll probably slow down once Pokemon X & Y come out but I can't see me leaving Paradise for a good few years.