How ever much I believe, however positive most of the record is, elections can fail to bring about a good deal, or better yet, a great deal, one hundred percent of the time.
The lesson of America is that there is no perfect system, and therefore the more we have "one" system, the worse things might possible get if we've made a poor choice.
The number of ways it can go wrong, remember, seems far more limitless than the ways it can go right. We could have a Twelve Monleys like scanrio (minus the time travel), we could have some sort of outer-space based catastrophe (remember that asteroid we didn't know about until it had passed?), we could have a terrestrial climate problem (too hot? too cold?) or what often seems like the most likely, an intersection of desires of non-divisible goods.