Most don't realize they are slaves to their mobile devices or cell phones which have resulted in walking and driving "cell phone zombies". A "slave to the grind zombie" ultimately breeds communication attention deficit syndrome to the outside world and sacrifices personal health.
For example, real estate agents would not be efficient in their occupation without their own personal mobile devices, but to work that hard on their devices day and night will slowly microwaves their brains increasing the probability of a brain tumor.
("Can you live your life without the use of your mobile or cell phone?")
For me, the cons outweigh the pros. I find my time is more "benign" than "malignant" without one.