Gotten people who can do better into positions of power? Kept people who can do harm out? Gotten rid of the feudal system where you only have power of you're genetically born into it?
If voting didn't matter, why would people fight and die for it? If voting didn't matter, why do conservatives want you to not vote? If voting didn't matter, why bother pretending and gave elections?
Why should you give up your agency over your government?
Or are you cool with the people who didn't vote and kinda let Trump take over?