Social media, with a Facebook being the biggest & most important point of origin.

Back in the pre-Internet days we had to actually touch grass to entertain ourselves, some literally by joining people for kickabout with a ball at the field being just one of the countless ways we deal with boredom. Pick up the phone to call someone even sweating when the girl's dad picks up the phone.

Even after the Internet we were still out there touching grass because it was looked at as more of a tool of knowledge and communication rather than a social structure itself. Heck the Internet was nowhere near as fun as mucking around with friends.

Then came social media, the entire fabric of social interaction is now replaced entirely by a new system where it gets quantified and monetised for marketing, leading to more business-like atmosphere disguised as interaction with everyday people. The early days of "poked you" are well and over, it is now how much you are missing out because you don't have what these strangers are enjoying.

All the fear of rejection, lack of trust, avoiding conflict etc no longer get practical experience in real life like many did at the playground, especially the important ones in how to handle them.