incorrect use of you're spell chequer can confuse people when their reading it and result in many tiers.
joking aside, the english language is fucked up, i'd hate to be a foreigner learning english.
tear - am i bisecting a page or crying?
leaves - am i going, or am i watching the trees shed their greenery for the autumn?
shed - am i removing something, or am i in my garden putting the lawnmower away?
date - am i looking at my calendar, am i out with a beautiful lady, or am i munching on the fruit of the phoenix dactylifera?
and don't get me started on two/to/too, they're/there/their, and of/off.