How can I abandon my morbidly obese mother without remorse?

She has been extremelly fat since I remember her, about 450 pounds (200 kg). In the last 15 years her health has been dramatically decreased due to her condition, and also her morbid obesity causes her serious mobility problems.

I 'm living with her since 10 years ago. She has nobody else to take care of her and no income to hire a caregiver, but her condition doesn't allow me to have a normal life: she is always at home, never going out, so she doesn't allow me to have my personal space. She is constantly asking for things and affection, which obligates me to invert my precious time in her, while she doesn't do any effort to revert her situation. She tells me that every person has to deal with his fate, and my own fate is dealing with a problematic mother.

She never took great care of me in childhood, my grandmother actually raised me, while my mother was always getting fat by eating huge quantities of junk food.

I want to leave home, and have discussed it with her, and she goes crazy when I mention it, she is always telling me ''who would take care of me if there wasn't you?''.

I am tired of this situation and her condition and the lack of other people around her makes me feel totally responsible of her. I cannot accept that this is my fate. I would love to be just an asshole who abandon his mother without remorse, but I actually have huge guilt about it. How can I overcome this feeling? I want to live my life!!! I can't stand being the caregiver of a self-destructive person

How can I abandon my morbidly obese mother without remorse?
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