As someone whose Mum was abusive like that(fed us shit, kicked off if we didn't clean our plates) I would argue that a meth addict Mum is "better". At least social services or welfare or whatever in your country are likely to see the inherent evil of an addict parent and take you away from them I left home at 19, and it took me a year or so to get to healthy weight, but a lot longer to shift the bad habits and sort my relationship with food. Had I been put in care as a kid, this would not have been so much of a struggle for me as an adult I know you didn't ask me, but that's just my two cents