Your new toy will be obsolete in less than a year. Deal with it...it's the Apple way.
Actually with the iPhone, I have upgraded my mobile phone a lot less... I purchased my first gen iPhone around fall (October I believe) last year and I am still using it today (going to upgrade to 3G version in August when I get back from Dublin)... Before the iPhone, I have used 4 phones in the span of a year...
The iPhone actually brings a halt to my phone buying habit (Thank Goodness!!!) and I haven't been more satisfied with a laptop that as much as my MBP
