Not at all. More sales than ever, last I saw. Possibly out of mutual peer pressure (because it's certainly not boredom with the same-old if they move onto CoD), people tend to stop partaking of it after a point in their lives, while the next generation's children get into it. Perhaps the franchise hasn't enjoyed the cultural omnipresence in the West that I feel it had during the first generation, but I have grown up myself since then, so I don't know if it's still a big thing among primary school students. Most of the regulars on this site are in or nearing their twenties, so you might even find yourself a little youthful around here.