If you want everyone in the world to agree it's not going to happen. If you want enough people in the world to agree to move things a little towards what you want, it's possible.
(And since you brought up the topic of sneering and insults, frankly, the only time I've felt insulted at at on this site recently was your "Not with that attitude" comment. Perhaps you're assuming some kind of ill will or political motivation on my part that was not in fact there. Regardless, your comment still reads like a sneer to me, three days later.)