Are you serious?

If your mother fell down and bruised her knee, looked it up on WebMD and it said it could be cancer, so she moved into a hospital for the rest of her life, would you be okay with that?

I'm not nitpicking over a diagnosis. A "self-diagnosis" isn't a diagnosis at all, after all.

There is a difference between support and enabling.

All you're doing is giving yourself an excuse to stay miserable. I cannot imagine why anyone would want to do that. If you think you can explain it, go ahead and try.