I'm sorry that I "whip out" my /. postings at 90wpm, but I have better things to do with my life.
Off topic, but this is a common belief of poor spellers or those with poor grammar. They often think that people who have good grammar and spelling skills spend a lot of time nitpicking their own writings so that they're perfect. I actually think that it's quite the opposite.
If you take a little time to be more clear and concise (yes, spelling and grammar is related to this), you'll find that you end up spending less time in the not-so-long run.