My big problem with the Air and the ensuing MBPs is that everything is glued. I'm holding on to this laptop for as long as humanly possible because it still uses screws and I can get it up and running by myself in a day.
See, I'm like this too, mostly. I don't miss early meetings or stuff, but when it comes to showing up in the office at open I totally sleep through the alarm. It's hard to care when you know no one will say anything if you show up later.