Except that when a bad decision is made by a legislature, you know who to blame, because either your guy voted for or against the thing you wanted or didn't want. There's no way to boot out the entire electorate when they do something stupid, but you can send your legislator packing. Of course, incumbents usually win no matter how awful they are, and yes, the replacement legislator is probably shitty, too, but at least there's something motivating the guy to do the right thing by his constituents, even if it's just so he can keep his job.