Life of a cellphone

my reasons for changing a cellphone -
When the battery replacements won't work anymore.
When that number feeds twice even when you hit it only once.
When the screen is not bright anymore.
When the phone does not have all the features you've wanted for more than 10 days!
When your roommate has a better, more expensive phone.
When you drop it and there are scratches all over but it still doesn't break (darn it must be a Nokia!).
When you've added 500hours of talk time to it (Even though the sound is still as good as new).
When the screen is not large enough anymore.
When you really miss WiFi.
When the other service provider is giving away free phones and a better deal.
When all of a sudden your phone looks so much more bulkier than the phone everyone else is carrying.
When your phone is not *in* thing anymore.
When your girlfriend steals it from you...consider it 'd'.
When you are plain extravagant.

hmm....can't think of no more reasons...