The OP is troubling for reasons others have touched on, so I won’t really bother there. That said, for me, I often feel like I have the opposite problem. Where, to some extent, I feel LESS human than everyone else. I say that for exactly the reasons the OP has trouble relating to others. I can, and do, make judgments about people’s thoughts and motivations based on their words and actions and what other things I pick up about them as I build an internal model of them in my own mind. But for me, I’m the only person to whom I have access to the inner workings. I know all of my thoughts, the inspirations and motivations to do good, and also the bad or even horrible things I sometimes think. Similarly, I see how others interact, and I see myself treated as differently; hell, almost everyone with whom I’m more than a casual acquaintance with even comments that I’m just different from everyone else they know. This is never meant maliciously, at worst it’s neutral, but it’s typically more of an interest and inquiry into why, but it does serve as a way to me feeling just separate, when I strive, as I think most do, to make meaningful connections with others.
Anyway, I do think this is something that is easy for almost everyone to lose focus on. For most of us, it’s easy to learn about, to a certain extent understand, and in time care about or love an individual person, but when we come to people, they become an inhuman mass, more like a herd of cattle. It seems like our minds struggle to keep in mind that the richness and fullness of humanity that encompasses everyone we care about is actually instilled in every single person we come across, and that “herd” aspect is an emergent result.
In this sense, yes, I get frustrated when I see collections of people making what I’d consider to be poorly thought out decisions financially or politically. Yes, I get frustrated when I’m in traffic and I see the utter disregard that we often have for each other. But then I remember these things, and understand that they’re feeling and thinking the same things. I try to treat and relate to them each as individuals rather than as a group, and it immediately becomes easier.
Use the election as an example, it’s easy to see a group of people supporting a candidate I don’t, and seeing them as a group, it’s easy to just think that they just are “wrong” about these things. But in almost every case I’ve talked to people about these things as individuals, it quickly becomes apparent that each has their own motivations. Some are really well informed and thought out, some are less so probably because they have other priorities, but I can almost always reach a point with an individual where, even if we disagree, we both understand where the other is coming from.
But that’s exactly what makes us individuals. We each have different motivations, priorities. Who am I to fault someone else for not really caring about something I might be really passionate about when I don’t care about some things they might be passionate about. And sure, there are people out there with more or less selfish motivations in various areas, but I think we also tend to underestimate that most people are generally good and will do what they think is the right thing (even if we don’t necessarily agree). This is what gives me hope and keeps me from being overwhelmed by the emergent seemingly nonsensical selfish moronic behavior I’d otherwise see.
And on the animals vs. people, it’s much the same, but it seems so much easier for most people. A dog, for instance, it’s motivations and interests and priorities are patently clear to us. We understand them well, in part because they’re bred to relate well to us, but also because it’s so much easier to conceptualize “who” that dog is. The same for cats, though many might argue they’re less transparent than dogs, they’re still FAR more so than people. There’s a certain serenity in that level of simplicity and intimacy in really fully getting another, even if it is an animal and not a person. But ultimately, that’s all it is, humans are fundamentally far more complex and able to relate to us each other in far more complex ways, we might have more complex motivations, but when we understand and relate to those, because of that complexity it makes it often difficult to have the same degree of intimacy, but with that effort, we ultimately have a greater degree of potential connection and, thus, a potentially deeper intimacy. So I’ll offer, as an exercise to the reader, what if we could have that same fullness and completeness of connection and intimacy with people, to the greater capacity, that we have with animals? I wonder how the world might be different if we could get even a fraction of the way there.