Last fall, the Pew Internet and American Life Project wanted to see what kind of gadgets were in American's households. The results are out now and a chart from Pew is below. I would think that these results would be broadly similar for Canada (although I wouldn't be surprised to learn of greater rates of PC ownership.).
The takeaways: Everyone has a cell phone. Tablet PCs, like the iPad, are already in one in 20 households.
For me, having a 19 year-old with dilated pupils mutter “Keeewwwwllll!”, does not qualify something as either useful or necessary technology. If someone in their 50's mutters “Finally!”, then you know you have something, because it has clearly addressed an enduring problem and need.
Thus, it should not surprise us in the least that much of the technology shows a clear age trend, simply because it reflects invented and marketing-generated “need” and not actual need. In other words, the older, and less susceptible to youth-targeted marketing you are, the more likely you are to say “Well, I got along just fine without it for XX years, and haven't really been pining for something like that. I don't see what it would add to my life to have it.” That's not to say middle-aged and older adults don't have their marketing-generated needs (Cialis, anyone?).
I would have been curious to see a graph asking about stereos or televisions. It would have likely been skewed in the opposite direction.