Well, I'm Australian, so I generally think that compulsory voting* is the best system, although it frequently leads to more centrist governments than I'd prefer. But at least it leads to governments that are as close to what the majority wanted as possible. Obviously I wouldn't weep tears of despair if a bunch of right-wingers decided to stay home in a fit of pique, but I feel very strongly about compulsory voting, and, if voting is not compulsory, that as many people should be encouraged to vote as possible, even if they hold views opposed to my own.

*Technically it's not compulsory to vote, as no one can see what you've done to your ballot paper, but it is compulsory to show up at the polling station, take a ballot paper, and put that paper in the ballot box (or vote by post). You could of course spoil the ballot or return it blank to the box and there'd be no way of knowing.