Which word in the English language has been misused and overused to the point it's lost all meaning?

Please is misused so often that the average person can't even explain what's polite about it. People just believe it's polite because they were told off if they didn't say it, but saying it doesn't make you polite and there are plenty of situations where it actually makes you rude. There are also ways to make a polite request without saying please. Please is short for "if it would please you" which implies "but not if it wouldn't". It's polite because it reduces the pressure on a person to comply with your request. That is the only reason it is polite, and it is not polite if it isn't effectively serving that purpose. When a parent says to a child, "clean your room, please" this is a command. The "please" is used as a token of politeness, but it isn't actually polite because the intent is not to reduce the pressure on the child to comply. When a child says, "please, please, please can I have some candy?" this is not polite, because the intent is to make the parent more likely to comply. When somebody sends you a letter that says, "please find a cheque for $10, attached", this is polite because it is more of an offer than a request. If it would please you, find the cheque, but if it wouldn't, don't; I don't really care! I hate this word, because I feel like social conventions are forcing me to be rude. If we stopped using please ironically, the meaning would become less ambiguous and we would be able to use it politely in more situations.