Force Equal Height For All Child Elements

The first time I saw the setting in the configuration section of a Zone to 'Force equal height for all child elements.', I thought to myself that this would be a pretty useful selection box. I mean, why wouldn't anyone want all the 'blocks' in a zone to be the same height? It would make the page look professional and polished. So, without hesitation, I checked the box, reloaded the page, and waited with anticipation to see my Heathcliff and Catherine blocks together again with equal heights (shameless play on Wuthering Heights).