Recommended reading: Why Maker's Mark Watering Down Its Whiskey Doesn't Matter One Bit, by Brent Rose for Gizmodo (of all sites, right?).
While Maker's Mark has since decided to reverse its decision admist cries of outrage, I echo the sentiment that it wouldn't matter because you can definitely find better bourbon. And better bourbon can be less expensive than you think.
Truth: when bartenders misunderstand my order and give me Maker's instead of Baker's, I will correct them. But I'm usually too much of a pushover to have them pour me another proper drink. Watch out for the day I'm not, though, barkeep!