As another experience, I've yet to meet someone aged 20 and up that doesn't have Facebook neither in Texas nor Mexico and I'm meeting people constantly 20-40.

I'm sure they have Whatsapp, Instagram, and other apps, but I've never met someone who couldn't at least provide a Facebook profile when asked and then communicate with me on it.

It seems hard to draw on your kids' experiences until they at least enter university or the work force and are actually meeting new people. I never had a Snapchat until a cute woman asked me if I had one. Now I have one ready to go.

Facebook wasn't even available until I entered university, but that's also when the rolodex becomes useful. Not so much in highschool where, even in my massive school, I still wasn't meeting so many people nor had much control over my social life compared to uni.

So I'm wary of people extrapolating from what kids do. People have been saying the death of FB is just around the corner, "just look at what kids use" for years.

Of course, a lot of this also depends where you live, like how Americans will use iMessage while that's basically unheard of in other parts of the world.