Why?

why does it seem like I'm displaced in this world? I'm mentally sane but I don't feel like myself even when people comfort me or when everything is fine. It's like there's another realm out there and I'm displaced from it. But I'm mentally sane so it can't be that I'm schizo. If you help me or lend me support, hope doesn't exist anymore. I don't like living with the realization that I'm displaced from what was and was meant to be. At least a total transformation of the world is what I want but can't do that much as to repair this world. I'm repelled by the world for some reason. It's like something's telling me, "this is a world which poses a threat to me" and I just don't feel pleasant no more. It's as if Earth is not home, in the sense that there's something seriously unnerving about it all and I don't want to be selfish here and say "I" all of the time but it hurts in a psychological sense and it's been too much for me as it's caused me despair and I have no peace of mind in life anymore. For goodness sake, the world will never return to normal because all the world wants is change