I've voted in every election I've been eligible since I was 18. I don't think the candidates I've supported have won more a couple of times, but it wasn't for the lack of my vote.
So go vote - ideally, vote for someone, but if you can't find a candidate you like, vote against the one that you hate. Better yet, vote on the issues, not the candidate, if you think they can be separated.
And best of luck!