Ugh, can i give you a hug? Eh it's not real anyway so just take the sentiment...
Well, I don't know if it goes without saying since you've seen me around here too, but I seriously get what you're going through. Story of my life for just the longest time now.... I've been in and out of withdrawing into myself since forever ago, and in this freaking miserable, exhausting cycle of throwing myself at people/into things because I can't take the isolation, I can't take being alone, then running away as soon as it gets too close for comfort, feeling sad and uncertain the whole way. And obviously my social status has suffered so much for that. And obviously I don't really know the answer. All i can do is lend some of my self awareness, which doesn't really fix the problems but.
Would you agree that ultimately you're expressing a need here? Even if you can't articulate it exactly, you can say what it makes you want to do. Avoid. You want to stop feeling the impulse, but ultimately, what you want to do is to avoid. The impulse to be social, to care about and need other people, that is a part of you. You can't help what you are. What you are is the only reason you even feel the pain of that and start wanting to avoid it. You can't separate some needs from others... they are all a part of you.
Yes, you CAN cut that part out of you, basically. You can ignore it, ignore the possibilities of caring, ignore wanting a connection to other people, and little by little it will atrophy. It will become harder (than it already is) to connect, harder to exist in this small lil world with everyone else. Your comfort zone will shrink to every inch of your skin and you'll live in a small world with probably a lot of numbing behaviors to get by.
You can't be a psychopath. That is not what you are. They aren't that way because they willed it. They just turned out that way. It comes natural to them and it will never come natural to you... and that is perfectly acceptable. Acting like a psychopath and believing you are one ( I'm not saying you can't make yourself BELIEVE you are one, and i can attest to how horribly convincing these beliefs can be, but the thing is, they'll always fade away and you'll feel different, right? ) will never satisfy you because you will always no somewhere that you're not genuinely doing those this.... you're avoiding.
You're avoiding needing other people. You're avoiding giving them power over you, especially emotional power, the power to cause hurt. They call this counterdependence. And like codependence, it stems from a basic flawed (because it's black and white) belief. That I WILL be hurt, i won't be able to get by if I (have / don't have) a connection to other people. It's the same coin. I've been counterdependent and right now I hate to say it but the bald truth is that I'm horribly codependent. Because I'm avoiding having to rely on myself, because I think I will fail me, because it hurts to value who I am only to find out I am less than that, or I am not that.
I'm only saying this all because I have thought EXACTLY the same things you are thinking right now. I have wanted to numb myself from this pain so bad, yeah, wanted to be a socio/psychopath, a narcissist, any kind of freak with no empathy and no connection to others. And practically every experience with people risks flaring it up again. Cuz it's a wound that still needs healing. There is a wound at the bottom of all this and all I can promise is that no matter how much you get what you want right now, all the distance from people... the way you feel now will *not* last. You are going to get to that point where you regret that distance and you wish you could feel connected to other people again. Because that need is real and it is a part lf you, just like the need to shelter and protect yourself. Don't you think so?
None of these things are wrong. These feelings are okay. They're you, communicating to you, saying, help I really need something right now. It's good to acknowledge how you feel. It's good to accept that it hurts, but also that you aren't its prisoner if you choose not to be.
And please, please, i know how hard it is, but please do not tell yourself that there aren't good people out there who are worth caring about. I get how fakse that can feel but... You know there are. Some part of you HAS to know that. Or you wouldn't be struggling with letting that go. Well, you don't have to find the answer soon. All these possibilities can exist at once. I don't really even know you, but I honestly care a lot. If anything, just because I think I have an idea of how you are suffering right now and I think that you are too valuable to lose to that. Not because you're special, but just because you are a person, you deserve to have happiness, you deserve to find good things in life. You deserve that just like everybody else. It's okay to deserve that and okay to need it.
Anyway, yeah. I hope you can believe that those people are out there, and even if nobody is perfect, that that's worth it, even if it's harder in a lot of ways.
I don't know, I'm sorry if I sound really full of it right now though, part of me is talking to myself here. All I can do is share those feelings. Cuz I want to believe in them too.
Anyway, again, I don't know you, but if you ever need someone who you can trust not to judge you for who you are or think you're weak, you can send me a PM.

But, sorry if that's exactly the opposite of what you really want right now. :c just hope you're ok.