Bad: Absurdly pricey for a phone, they ruining attention spans and giving our kids autism/food allergies (according to Republicans and Sarah Palin-fangirl soccermoms, it diminishes interpersonal interaction. It can function as a highly addictive and life destroying time vacuum, but then again so can eating toilet paper and dryer lint, if TLC is truly the divine gospel it claims to be
Good: The convenience factor, you can basically never be bored while waiting for the bus, you never have to interact with strangers in public anymore, you can play games, you can check your email, if you use apps like Tinder you can actually theoretically find "sexy singles in your area" who aren't government reprogrammed AI robots (I don't personally partake, but it's there), you can also use virtual gps which is the greatest thing in the world, if every child had a gps-equipped smartphone, the kidnapping rate would drastically decrease because nobody would get lost anymore. Then again, the rate of child muggings would quickly rise to compensate this, so idk.
Justin Beiber (because no intelligent online conversation is complete without bringing him into the mix)