I can only surmise, maybe it's because you don't know who's in them and you hide your facial expressions too. Social interaction gets distorted when you don't have a face to use and need to rely on pantomime more to convey your thoughts and feelings. It's a very awkward thing to be presented with.

Dang... Certainly wasn't what I was even remotely thinking when I made this journal, but yeah, I can that being a reason as to why.

I was mainly thinking about how fursuits just sorta...stare into your soul with a dopey/innocent expression. It's as though they're going to eat your soul, but never change their expression while doing so. As you stare into their cold, dead eyes.

That was more so my thinking, but I think yours may be a little more accurate...

Yeah, similar thing to what I was thinking involving facial expression.