I know you think it helps you to cope with the horrors around you by adopting the view that ‘oh well, people are going to die anyway, why not kill them before their birth’, but this is defeatist thinking, at best.
You mentioned the circle of life, but I don’t understand how this applies to abortion? The major stages of the circle are birth, growth, survival, maturity, reproduction, and death. The people killed before they are born hardly had an opportunity to have children of their own to contribute to the circle.
Stating that there is no reason to fight the killing of unborn children because we can simply make more could aptly apply to any form of killing other members of our own species, born or not. I sincerely hope you will reassess your sad worldview and learn to respect the dignity of human life.