If reincarnation was real, perhaps earth is just a purgatory.
A test of our kindness, compassion and humanity. Where we are judged by the good and bad that we do and how it balances out.
For, there is good and evil in every of us; and we have free will on the actions we take.
Considering this, and the fact that different people are born into different standards of living in terms of wealth, health and abilities; and are subject to circumstances, illness and accidents…
Perhaps we all should all judge our own actions….
For if perhaps we can fight karma in this life, but maybe not the next?