I always forget to make eye contact and when I do it when I eventually remember I remember why I hate doing it. There's a physical pain and an emotional one, like I can read the person's emotions; not their emotions at the moment but overall. It's like I can sense a deep hurt within them, all their anxieties and doubts and worries. It's hard to explain but something in me imagines them bursting into tears or screaming and sometimes being really affectionate. Not everyone has hurt, some have soft round eyes and a good spirit (not a supernatural one).
So yeah, that's what I see when I'm supposed to be listening to someone when I make eye contact.
I like to play the eye contact game though, which is me consciously deciding when to make eye contact, for how long and when to break it.
My damn Ritalin makes me make eye contact, too much of it for a very long time, and I stand so close.
I can make eye contact with cats easily too but I'm still reading something into it. I love cat body language though because it's just so obvious. Tail wag, ears back, back arched, hissing, eyes wide, eyes half closed - if only humans were that easy to read. Likewise, dogs are easy to read too.