Is it normal i can't connect with people and feel closer to animals?

I do like some people and care for people I'm close to such as family and friends, but I've never really been able to connect with them. I mean I like them but at the same time I don't really feel that close. I usually like to stay back and just observe people, especially in public because it's funny to watch them interact with each other. I feel like I don't really understand people either, things it does sometimes leaves me confused, though I'm capable of socializing normally it's more from copying other people and just acting out what a normal person woukd do.

Animals on the other hand I feel very close to, I've cared and raised many animals in the past and feel very protective of them. I wouldn't see any problems in killing another person if they threatened my animals life. I value animals lives above humans due to us being overpopulated and us causing much more damage in our lifetime.

What I'm meaning is if it came down to it I'd pick an animals life over a humans, it wouldn't make any difference since we already have billions of humans. The time I have to pick one human to die, hundreds of babies around the world would of already been born.

Of course I don't actually want to go out and kill anyone, I was using the above as examples to emphasize my thoughts.