I dont think I have ever been corrected by one where the error I made was actually me making a grammatical error without me noticing it myself first when I read it back. Its often on here on comments which I usually bang out on a phone and don't proof read. I am never kind to them and their most common rebuttal is "educate yourself" or "not my fault you aren't educated" when I already know what I screwed up and chose not to change it as the clarity of my statement or question was fine either way.

This is what pisses me off, because of a grammatical error they jump to me not being educated when they know nothing about me, what college I went to, how old I am etc.