I tend not to defend many things American, but I have to speak up for American spelling. English may well have started here in England but many more non-English than English people speak English these days and a big majority use American-English spellings. It's typically quirky (and very honourable) of the Brits to hang on for dear life to their own way of spelling, but it's a bit Canute-like to berate the Yanks for their system, which (I hate to say) is often more logical than ours. But who wants logic to enter into it!