I'm not sure it has added much to our lives really.

Cell phones have added a great deal to out lives!

- inappropriate noise & interruptions in theaters, concerts and lectures etc.

- Bothersome idiots prattling on at the top of their lungs in public places about their infants excretory habits , their stock portfolios, their hemorrhoidectomies etc. etc.

- a nation (world?) of attention defecit disordered and techno-addicted toddlers who need to be in contact about nothing of significance 24 hours a day

- Idiot parents who spend a fortune on their children's absolutely unnecessary cell phones & bills and then bitch about taxes etc

On balance they've added a substantial quantity of unnecessary bullshit, annoyance and aggravation to our lives.