And in a pefect world, it would be that simple. But guess what, unless you choose to live in a fantasy world, that's not the way it is in real life.
In a general election, you are voting for someone, as well as against someone, and even if you don't vote as all, your actions have serious ramifications. The Perot useful idiots gave us Clinton. FACT! Your bubble world didn't exist.
You are entitled to your opinion, of course.