In an attempt to not let this thread totally spiral out of control, I thought I'd just make some general, on-topic points:
I don't really understand why you are so adamantly against the inclusion of a spell checker given that if you didn't want to use it yourself, you could simply disable it. Although I don't agree with every point you've made, the majority of them are true and not really being contested, so I'm not entirely sure why you keep listing off the flaws of spell checking. No one is claiming that spell checkers are perfect, but I would still find them useful even in their flawed state.
The point about it being time consuming and/or complicated to implement is certainly valid, and is the real crux of the discussion. I never really had any opinion on this point.
