Well, I'm 40 and I think I'm probably quite typical of the kind of people who are getting into film, or getting back into film.
All of this reminds me of the angst in another hobby that I used to pursue, and still do a bit, which is amateur or 'ham' radio. Lots of wringing of hands going on there - the internet, mobile phones, SMS messaging, who wants plain old radio any more, it was the leading technical hobby for the best part of 70 years, but the kids aren't interested now. Etc, etc, etc.
The truth is that lots of kids are getting into it, as they are with analogue photography, and even more so it's men (because it usually is men) of a certain age, looking for a challenging hobby, who have reached a stage in their life when they have settled down and have a little money to spend on their interests.
Ultimately the survival of film depends on people buying the materials. It's a mature technology, it isn't the only thing that uses coating processes, Hollywood (and as importantly, Bollywood) still uses 35mm so basic raw material manufacture isn't threatened yet, you can make up your own chemicals if you have to, there are hundreds of people registering here every month, other photography boards are full of questions from digital users wanting to know about film, and I'm sure there are many other examples which all add up to a lot of reasons to be optimistic.
If the time ever comes that Ilford finally puts up the shutters, I can hide a lifetime supply of HP5+ in the freezer, but I doubt it will come to that.
Kevin