Really quite amusing, since I know you would never take your condescending tone with me face to face. You're probably a lovely person in real life but it seems that that the amenity of the internet has led you to abandon respectful discussion.
And yes I've been guilty of it too.
Oh I am a VERY "nice" person, but I would, most assuredly, say these things to your face and more! I refuse to suffer fools lightly!
The problem with the typed word, is that we can't hear the inflection in other's voices, nor see their face or body language.
We've ALL been "guilty" to one extent or another, on this site, of misinterpreting/reading something into another's post/s.