You may have heard people telling you to vote. I would like to join those people, because you are here, running nations, weighing trade-offs, and choosing least-bad options, which makes you far better equipped to vote than most of the people who will actually do it.
I mean, I don't want to say that all voters are single-issue crazies with demented worldviews. But a lot of them are. For democracy to work, we really need to balance that out with people who can look at an issue and notice it has more than one side.
Decisions get made on voting day. The only question is whether it's by your or them. So please do vote, even if you think it won't matter; your voice will still be heard, and recorded, and exert a small but significant influence on the future direction of the world.