Closed primaries, warped democracy?

In an article for the Christian Science Monitor, Harry Bruinius writes in part:

“… At a time when Democrats and Republicans are a shrinking share of the population, closed primaries are shutting more and more of America out. The irony is that America is no less partisan. Research suggests the growing ranks of independents are just as partisan as the parties. These voters have just abandoned parties because they are ashamed by how the parties act.” Full article here.

Question: Have you refused to register for one of the two major political parties because you’re ashamed by the way they act?