Never underestimate the power you have.  Every movement, every change started with one person.  To throw up your hands and sit there and say there is nothing I can do is to give up all your power.  The politicians know this well.  Elections are won one vote at a time.

Even if the stance you took was unpopular you have influenced other people and other politicians.  One presidential election, in recent times, was won by mere votes.  Never, ever give up your power of one vote.  That is all you have.  And that vote can move mountains.  If only every person believed that, less politicians would act with impunity.  They serve us.  Not the other way around.  So vote.  It matters.