Can't take a picture with a dead battery.
you own a smart phone by any chance? Pretty much like a sony camera, top it off before you're out for the day, when you get home, put it on the charger (it can be charged like a phone). Your phone typically has just enough juice for the day, do you bring spare batteries? Well a sony camera is the similar, has just enough juice for the day, and you can bring spares.
of course if smart phone battery life is unacceptable, then you trade off the tech for a dumb phone that lasts for days on a charge.