Because I won’t have a hand in bringing down my country.
You'll be "bringin down" your country if you allow the Democrat candidate to win this next presidential election due to your (and anyone you've convinced) of not voting for the Republican candidate. If you think we are better off with a Democrat in the Whitehouse for the next four years, then you're saying that you think we would have been worse off with a Republican (rhino or not) in the Whitehouse. That's insane, IMO.