Let's say you're going to design a character for a game where your representative is build on six attributes. Just for the fun of it, we'll call those six Strength, Intelligence, Constitution, Intelligence, Wisdom, and Charisma. And you're making a front-line, armor-wearing, sword-swinging basic fighter. The person running the game has given you a handful of points to assign into the six attributes. You can't get any more and anything you assign is permanently locked.Fighter. Hmmm.
Well... gonna need a decent amount of strength in order to carry some of the weapons and use them for any amount of time, plus you need to hit hard. So that's a priority. Dexterity keeps your character moving and dodging out of the way of someone else's prospective hit once in a while: definitely important. Constitution controls how many of those non-dodged hits you can take, so something has to be thrown in there.
Intelligence? Well, there's battle tactics, analysis of your enemy's weak spots, the ability to come up with a strategy that will command an army --
-- oh, screw it. "You call me dumb? Wanna fight?"
Wisdom? "You call me mendicant? Wanna fight?"
Charisma? "You call me ugly and socially maladjusted? Wanna fight?"
http://tvtropes.org/pmwiki/pmwiki.php/Main/DumpStat
Hey, at least you left the poor thing able to tell which end of the weapon was for holding. And isn't that the important bit?