While I'm all in favour of individual action, I think it's very reductive to say that that will stop climate change. And even the politicians we explicitly vote for to actually do things don't, or not enough. And it's not like we chose to live in a world that is being destroyed by climate change, so how is it selfish if we leave behind other people who also do? They created it as much as me - barely, because none of us have any real recourse to deal with it.