Good sides are
1. You can search any information you need.
2. You can play games with other people.
3. You can get acquainted with others, make new friends and even find the love of your life.
4. It is easy to chat with unknown people via internet than in real life.
5. You can have unlimited distance phone calls for free.
6. You can see for example your relatives through web cam even if they are on the other side of the planet.
7. You can order any stuff you want. You can have them delivered.
8. You can read any books you want on the couch without going to the library and searching ones. You can see any movies as well. You can listen any music you want.
9. It is helpful in business.
10. It is so interesting! Nowadays you can't even imagine a life without internet!
The bad sides are
1. To use internet you always have to be attached to different devices which are iPhones, iPads, laptops, PCs(Personal Computers) and so on, and all of these stuff have the strongest affect to our health. Because devices have radiation.
2. Using internet makes a man more not social.
3. Instead of chatting more with each other we prefer to sit in the internet.
4. With internet you get some kind of a addiction. Kids don't want to study well, they want to play as much as possible.
5. Internet may cause a bad influence for children.
6. Придумай еще на русском, я переведу.