I understand your rule and I advocate the same, but it’s just plainly wrong to ban people for using simple everyday words, just because they MIGHT be used in other way to offend someone. Might as well disable the in-game chat altogether, because it’s impossible to know what will get you banned, if the word «suck» is thought as a bad word.
I am in my mid twenties, and I sure know what words are bad, and the word «suck» is not one of them. Sorry.