I'm actually bad about this....in the opposite way. I tend to spend too much time looking over an email to make sure that it conveys the message that I intended in the way that I intended it.

Emails, and writing in general, are tough (at least for me) to make sure that the "tone" of the message is done in such a way that it can't be interpreted the wrong way.

I think it just comes down to professionalism in the workplace. Everything I do reflects on me, whether I want it to or not. So I better make sure that the reflection is the one I want.