Cause and Effect of Internet

Many people spent most their time on internet. Internet is currently booming due to advanced technology. What are the causes and effects that made people used it?. Starting from the cause; many causes why a lot of people use internet. On internet, they could browse information that currently happened, play game online, chatting, etc. Most people could spend their time on internet during 12 hour in one day. They enjoy and feel more fun rather than do some activities, but internet has effect on our daily life. People can waste their time only browsing internet, lazy to do anything, and even worse than that. People could do a criminal on internet. They could cheat people on trading/shopping, put some virus on our computer, breaking a bank, etc. We must careful while using internet. It can be useful and dangerous for us.