We have been trying to make a better world since we evolved into humans and yet we're still like this.
If anything we've gotten worse as technological advancements have increased and that made enslaving, colonising, genociding, wars, mass murders and all the other horrible shit people do to each other, easier; maximising the suffering caused.
Telling people to kill themselves for being upset with the status quo, because you're trying to make the world "better", is hilarious.