Read this [http://blogs.nationalgeographic.com/blogs/news/breakingorbit/2010/03/tiny-solar-sail-pitched-to-cle.html]
It talks about how satellites alone are generating a harmful amount of space debris. And in space, these debris can be very hazardous to other satellites or astronauts. Basically, launching trash into space does not make it magically disappear. It stays there, orbiting earth, and eventually crashing down on your head. The only way this wouldn't happen is if you launched the trash into deep space, but that is ridiculously expensive and has the potential to cause the same problem in the distant future. People used to think burying trash or throwing it in the ocean wouldn't cause any problems, and look at how wrong they were.
Not to mention how every bit of trash you launch into space reduces amount of resources on Earth. A lot of trash can be recycled and reused for a variety of different purposes. Even the nuclear waste generated by power plants could be potentially reused as another power source. If we just launch it all into space, we don't get that opportunity.
It talks about how satellites alone are generating a harmful amount of space debris. And in space, these debris can be very hazardous to other satellites or astronauts. Basically, launching trash into space does not make it magically disappear. It stays there, orbiting earth, and eventually crashing down on your head. The only way this wouldn't happen is if you launched the trash into deep space, but that is ridiculously expensive and has the potential to cause the same problem in the distant future. People used to think burying trash or throwing it in the ocean wouldn't cause any problems, and look at how wrong they were.
Not to mention how every bit of trash you launch into space reduces amount of resources on Earth. A lot of trash can be recycled and reused for a variety of different purposes. Even the nuclear waste generated by power plants could be potentially reused as another power source. If we just launch it all into space, we don't get that opportunity.