If you let your smartphone dominate your free time to the exclusion of all other interests and hobbies then you’re doing yourself a disservice. Is playing Angry Birds really better than reading a book? Is tweeting all about your life better than eating out at a restaurant? Is surfing pointless websites for hours on end better than learning to speak another language?
Except for eating at a restaurant, I do everything on either side of those comparisons on my smartphone.