Them stealing your charger for it, this as happened to me and god is it annoying, see you macbook there, knowing that you cannot use it unless you find the charger, thief or buy a new one. 
I think seeing a charger and knowing that you have no MacBook to charge with it would he considerably more annoying.
Wirelessly posted (iPod Touch 2G 8GB: Mozilla/5.0 (iPod; U; CPU iPhone OS 3_1_3 like Mac OS X; en-us) AppleWebKit/528.18 (KHTML, like Gecko) Version/4.0 Mobile/7E18 Safari/528.16)
You can always look at cheaper Chinese websites..
Like dealextreme.com
What could be more annoying than someone stealing your MacBook? Someone stealing your MacBook and leaving you with a windows laptop in it's place.
I think the point the OP was trying to make with the thread title flew right over your head.
The only logical reason to steal a charger is if the thief had either lost their own or damaged it.
It's annoying, but ask yourself this - is it as annoying as, say, waking up one day to find somebody has daubed racist phrases on your car in their own excrement?