Life isn't fair and time travel doesn't exist. We are stuck with the world we have now and have to deal with the realities, including suffering the consequences for things not your fault. It isn't fair that a son gets cancer because his mother smoked around him all his life, but he is still the one that has to go through chemo.
This argument can be used to justify whatever actions you want. You know that, right?
For example, I'm gonna take your house and when you ask why, it's because "life isn't fair".
However, various forms of fairness to balance out past wrong doings can always be achieved if desired, but it usually requires force or democratically if over 50% of people can unite on it.
Yes, which is why I wrote more than 3 words. It is why I used the cancer analogy. This generation is left holding the bag, and it has to be dealt with. Stomping your foot and saying it's not fair does nothing to cancer, nor does it do anything to climate change. I’m not saying a specific policy decision is right or wrong. I’m saying this generation has to deal with it, regardless of fairness.