Why are there so many pornographic comments on the Internet and how to avoid them?

This is out of control. All kinds of websites and pornography can not only get rid of legal restrictions, but also attract people's attention and ensure profitability. As a result, they followed suit and formed such a network environment. The so-called net action is of no help at all. As long as you have access to the Internet, you can search for any information. In this environment, the net name has grown for a long time, which is almost everyone's connotation, neither yellow nor yellow. How to avoid this is a big problem. When people have a normal channel for venting and discussing, then people may engage in pornography through that channel. However, this kind of channel is rare and illegal in China, so people have to fantasize infinitely. I really don't like these people or comments, so I'm going to delete them once and change my circle of friends, maybe it will change.