I think the main problem is the pro-voting folks go all nuts saying that voting is SUPER IMPORTANT and you HAVE TO DO IT or EVIL THINGS WILL HAPPEN.
I've been voting nonstop for 24 years. There hasn't been any really huge change because of it. Even when the bad guy wins.
Voting should feel less like an epic struggle for the soul of a nation, and more like paying your taxes. You have to do it, but you don't have people screaming at you for the preceding 18 months about how meaningful and important it is only for nothing to really change. No matter who wins on election day I still have to go to work the next day, the sun is still going to rise, and America will kill brown people.
Edit: Maybe the reason I don't feel like voting is that effective is that I don't really have anyone to vote for, just against.