Ineffable Ontological Detanglement .: Introspective Assistance & Mental Analysis Manual
What you have is detachment. It goes too far and you start looking at people as completely unreal and there's no reason to be nice to them or interact with them whatsoever they're just a moving talking blob of carbon that lives inside of your fuzzy grey hazzy staticy perception. Small amounts of schizoid, however, have a lot of value. It is the strongest foundational fortification against urge to hurt people imprint outside of deep emotional repression and processing dysregulation, people who attempt to hurt you can never penetrate as hard as they would like to. It's not going to stop you from reacting to idiots but it's a very good aid to your casual snideness.
It means you will never love anyone as deeply as those without it, you cannot achieve the same level of love as a normal. It doesn't mean you don't love. It doesn't mean you're heartless. We all feel at varying levels, society calls you detached and heartless, society makes you wonder what the hell could ever be wrong with you you're dead on the inside... It's just varying strength of feelings and it's due to the structure of your brain. There's no need to strain and force, all you'll ever achieve is a very convincing facade. Indifference to tragedy is another, it's simply the nature of dethatchment and there's nothing you can do about it. You do not need to feel deeply the significance of the tragedy to understand the significance of the tragedy. You do not need to cry for the world, you just need to understand why some need to cry for the world. You don't need to pretend.
Schizoid does not equal self interest until the point where you are cut off from everything except the self, up until this point there is absolutely nothing within the schizoid condition that makes you self interested. It just dulls your interest in others, that in no way means you naturally turn interest inwards. However once it is cut off entirely, all you have is the self. You can't do anything about it, but don't try to justify, just leave it as it is and accept this means people don't really like you. The more schizoid you have, the less you compartmentalize relating to what people do to you and what you do to people, the less you genuinely care. All the way to the very top where you don't compartmentalize a thing relating to what people do to you and what you do to others, you don't care about anything that comes at you from another, you don't care about anything you put out at another. You get to do whatever you want to whoever you want and you'll never have to find a way to deal with it.
You can't really ignore anyone without a little schizoid, it can't be done. If you find somebody annoying you're going to vaguely pay attention, pretend you're ignoring, sit there building just as much resentment as if you were acknowledging them. Even with schizoid it can be pretty tough, but without schizoid it is impossible. People who try to pull off cool detachment for pretend with an "Oh alright" at something incredibly stupidly infuriating know there is a lot going on in their mind that is not "Oh alright." And it does show on their face. Those with schizoid do not, what is happening in their mind is in fact a full awareness of what they're seeing but their only response internally to this is "Oh alright." It can still lead to the point of snap, and this is where it looks like we're repressing feelings but we are not necessarily repressing feelings, this is just the point where that's enough it's time to engage in the full awareness of what we're seeing. We didn't want to bother looking at the full awareness of what we're seeing until now, it looked pretty stupid. Sometimes there is within it repressed feelings, but, there isn't always within it repressed feelings.