I think it's handy for times you aren't close enough to the phone to hear it ring. Set the phone by the computer, take a shower and see a notification light of some sort that let's you know you missed a call or text. Maybe I like it because my droid has it and I'm used to it. My wife doesn't seem to be bothered by her iphone not having it. If apple does implement some sort of notification light hopefully it can be turned off for those who don't like it.
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Sent from my Droid using Tapatalk