It's easy to criticize you - one could simply argue that these will be measures taken only by a few, and therefore won't have an impact.

I still admire the fact that you are trying - who am I to dismiss it?

And yet, unfortunately I am more and more convinced that individuals won't change history. For a brief moment in my life (~2 years), I naively tried to do something to better the world, and of course didn't go anywhere.

It's sad.