I'm not ashamed, I'm angry. I'm not mentally ill, and I've never done anything for which I've deserved the treatment they've given me for the diagnosis they applied to me.

I hate this analogy. It's completely wrong. To start, diabetes is an illness with clearly defined causes and evidence-based treatments targeted at those known causes. No matter what medical doctors say, psychiatric categorisation and "treatment" have a long, long way to go before they meet that standard -- even if the current theories are correct, they remain wholly unproven.
And second, it's impossible to force somebody with diabetes into hospital for compulsory "treatment" (in quotes because it's not treatment so much as tranquillisation) if they refuse to take their treatments. Even if diabetes were a fabricated "disease" the same as mental illness, it still wouldn't be analogous because diabetics can't be forced to take treatment against their consent.

Im sorry you went through that.
Though for me, it doesn't make any sense to say I'm mentally ill because I have a bad reaction to several rapes and some serious, long-term abuse from psychiatric treatment.

I want to be an academic, but for a while I'm going to work in tax/trusts/asset management.
The doctors told me I am was too disabled to work and I'd be on benefits my entire life, but I'm going to prove them wrong about everything they ever said to me. It's almost the only reason I'm bothering.