You are being uncharitable. In fact, you're demonstrating the dynamics I spoke of in my post.

I could give you a detailed response but, given your tone, instead I'll say: assume the best and don't make everything about yourself. Several people I know have struggled with negative mental health effects of finding themselves in a caretaker role for a mentally ill friend or partner. In my experience offline groups (not individual relationships) have pretty good immune systems for this. They also often do band together to support or help a struggling friend.

In the same way that you expect a depressed person to receive charity, please offer it in your responses.