Its possible to live without indoor plumbing or electricity, but why do so when modern living can enhance the quality of life so much? I see my smartphone the same way. Its like having, in addition to a phone and an email device, an encyclopedia in my pocket. I can also access my books that are on my Kindle, play games while waiting somewhere, use the GPS navigator to get to locations or find my way home, etc, etc.
I virtually never have left my home without my phone. I have, on occasion, left without my gun since I rarely carry within the house and sometimes have run out for an errand without stopping at my small gun safe to retrieve my firearm before departing. With grandkids often in my home I won't ever leave my gun unsecure, not even for a moment, so it will never be as readily available for automatically putting into my pocket like my wallet, keys, phone and money clip.