Is it strange that I'm turned on by people that use proper grammar?
Not at all, although I have to confess I occasionally comma split when I feel I am among friends.
Everybody has their attraction, to me, it's teeth. They don't have to be perfect, in fact, I like teeth that protrude a little. I'm attracted to things that are not perfect because I get bored with perfection.
No, that is not strange.
People who use poor grammar sound ignorant and uneducated. This is a turnoff for me.