One thing that most people don't understand is that space war could literally kill the human race. A lot of people hope that some day we will be able to escape this planet and inhabit other worlds, and at the rate the population is growing, we might have to if humanity is to survive and not just collapse the ecosystem under the endless demand for resources.
The only way humans can inhabit other planets is if they can travel past our atmosphere and orbit. If there are satellites blowing each other up and creating random debris everywhere in Earth's orbit, then it will become impossible to fly any kind of spacecraft outside of its orbit. Furthermore we would not be able to maintain communications, GPS, internet connectivity, Television, etc because all of these systems are heavily reliant on satellites which would also take damage from the debris moving at different velocities.
Anything up in space would just be ripped apart by the space junk left over from such a conflict. When China did some of its most recent testing of anti-satellite technology, this was one of the main reasons protests that were raised from the scientific community. Because of this, if we have space war we might literally be damning ourselves to living out humanity's last days on the ever shrinking resources of this rock, even if we actually develop the technology to leave.
No one cares that people are heading in ways that can rip Earth apart. CERN is continually going, to further science, knowing full well they could cause a black hole that makes everything disappear over night. People are apathetic when it comes to stuff like this.
I've recently read something about
a group that wants world peace by force, and one of their tactics would be to blow up satellite stuff too. No one thinks of the consequences of what they do anymore.