I used a Blackberry from 2003 - 2010. Then a few iPhones from 2010 up until June of this year. I now use an HTC One.
My HTC One requires much more management than my iPhones and Blackberry's ever did. Wake locks being a term that didn't even exist to me until I got my HTC One. And let's not even mention what GPS on an Android phone does to a battery...... on an iPhone you barely notice that it's on.
For carefree phone use an iPhone is the way to go...that's the majority of the population. If you want an OS that's a little more versatile and requires a little more TLC...go with Android.