Dont be daft, we are in the midst of an always on, always contactable technology, this is having an effect on more and more people, not just youngsters, but people with smart phones answering work emails etc. They are not weaker, they are just stimulated in a different fashion to when I was a kid. EG, I used to ride my BMX on the track by the Morris Common, I soon realised that if I fell off it hurt, but also got a thrill if I achieved a jump etc, but the crucial bit is I learned of risk / reward while also burning off calories / excess hormones.
Today's kid, they fail in an electronic world (IE playing a computer game) it doesn't hurt, they complete a game etc they still have the thrill and exhilaration but are not burning off calories or excess hormones. Just because its different to how previous generations grew up, doesn't make them weaker.
Our senses now are constantly battered, we can watch what we want, when we want, how we want. Kids growing up are usually the early adopters of new technology and are probably more plugged in to the way of todays world therefore fel the effects of this more than an adult, who can obtain a release in a different way, they dont have the emotional intelligence to deal with the world, are full of hormones therefore more susceptible to stimuli, hence the ever increasing metal health issues we are seeing, also with a growing acceptance of this illness people are now more likely to talk, and to recognise it. Another thing to consider is the role of previous generations in shaping the current youth.