So before you decide your vote doesn't matter in this election, consider this question: where else in your life have you left the playing field because you didn't like or agree with the way the game was being played? What relationships have stopped working due, in part, to your decision not to fully participate?
The 2016 election cycle in the United States has been protracted, hostile, and ranged from merely discordant to bizarre. The level of xenophobia, misogyny, and racial hatred so openly expressed without conscience is utterly breathtaking. It is all reminiscent of the paralyzing terror that African Americans endured for a century following the abrupt end of the Reconstruction Era in the late 1800s.
Your grandchildren will not ask what you did during the 2012 election. But if Trump is elected, I guarantee they will ask what you were doing during October and November 2016. This election cycle, it is not sufficient to silently vote for Clinton and see what happens. The polls have narrowed dangerously in the last month, and notwithstanding Hillary's post-debate bounce, the election is still far too close.