I love this post on 'lateness' by Greg Savage, it's titled "How did it get to be ‘OK’ for people to be late for everything?" Here is an excerpt :

And it is not that we lead ‘busy lives’. That’s a given, we all do, and it’s a cop out to use that as an excuse. It’s simply that some people no longer even pretend that they think your time is as important as theirs. And technology makes it worse. It seems texting or emailing that you are late somehow means you are no longer late.