Don't be too hard on yourself. You are an English teacher! I judge people when they use poor grammar, but usually just kind of laugh at it. Some things drive me insane too. Like adding an apostrophe where it doesn't belong: "The boy's went swimming." REALLY??? REALLY? This is basic stuff. Texting has destroyed the English language and it's only going downhill from here. However, some people just do not have an affinity for language, spelling, and grammar but they excel at other things like mathematics.
Okay, maybe I care more than I let on. I'm glad I'm not the only one.
Apparently I'm a judgmental bitch too. A friend of mine recently gave me this book for my birthday. You are not alone.
I Judge You When You Use Poor Grammar: A Collection of Egregious Errors, Disconcerting Bloopers, and Other Linguistic Slip-Ups: Sharon Eliza Nichols: 9780312533014: Amazon.com: Books