prevent confusion? good idea. prevent personal inclination by creating arbitrary rules that were created just so that we may "have widely accepted rules"? very odd reason to have a grammar rule. if we are just trying to make up rules when does it stop? how about we capitalize the third letter of every word with more than five letters from now on as well? and we can use two periods after every sentence that has more than ten words, and so on. things like that will certainly help make more rules and prevent people from only using rules based on personal inclination.
i'm obviously joking but this is surely the way it was going before literacy became so common and communication became so easy and informal. more and more rules, everywhere, all the time. constant change as well. now there's more and more people typing like me, this will eventually lead to a lessening of arbitrary rules while necessary rules will be maintained as language cannot function properly without them. see what i'm saying? it used to be about making up rules, now it's going in the other direction and i think capitalization should be the first on the chopping block as it serves almost no purpose. in fact if we stop all the excess capitalization and only capitalize really important words, or words that would otherwise be duplicated with an identical word with a different meaning, then capitalization will mean so much more and make writing more clear.
one that really gets me is "I". it's all alone! are you really going to see the letter "i" all alone in under case and wonder "what on earth does that mean?" but if it was capitalized you will clearly know the writer was referring to himself. there are almost no other instances when the letter "I" will just be totally alone.
one more thing on a side note: in most fonts the letter "I" and the letter "l" are nearly identical. in some fonts they are identical and it's super confusing. so all the attention to detail and arbitrary rules and somehow this one is usually missed. i don't get it.
EDIT: i'm all about the beauty and intricacy of the english language and language in general. i do not want to reduce it down to ultimate simplicity:
"me hungry. food now. sleep later. baseball fun."
we could type like that and it would work just barely but we would lose SO much! i'm all for keeping every single rule that makes language unique and articulate for conveying very specific ideas and emotions. all i'm saying is that rules that serve absolutely no purpose should go. and this kind of thing goes into a lot of aspects of life, like bank facing money! what is the point of that??? if it's not all facing the same way it can't be spent? do we make sure every straw wrapper in a restaurant is facing the same way? or that every label of each condiment in our fridge at home is facing outward? or that all of the pens and pencils in a pencil cup have their brand names facing the same way? no we don't (perhaps some do, but it's not the norm nor is it prevalent like bank facing) because it serves no purpose. neither does bank facing. and that's one more useless thing that's on it's way out! most big chain restaurants and department stores don't do it any more and even some banks don't require it of their tellers! you still have those random people who take it upon themselves to do it but it's in the decline.
also: if you bank face the bills because it "looks nicer" why not bank face the coin too? that one i'll never get: "here's your cash, all facing the same way because it's super important! and here's your change, i'm just going to literally drop it into your hand and the coins are going to fall totally randomly, facing in all different directions because that's totally different."