I (25f) have an older sister (28) who has been relying on us for everything since she was a kid. She does not make or go to appointments with her doctors without me or my mom (even though she is diabetic), does not respect appointments at for example the bank, does not take her kids to school, does not go to work by herself etc... She has been heavily relying on me and my mother for most of her life, except for the 5 years I went to university and was in another city, in which period she relied on my mother only.
When we were younger, this organically grew out of compassion and pitty: "I'll help her because she doesn't seem to get it done by herself and I don't want her to get in trouble in for example school". But this has become a convenience and now she expects me to cater her every need. Granted my mother always raised her as the non-independent one where I was expected to be independent and helping everyone. Anyway, after college I returned home (which is normal in my country) and the same habits got reinstalled. It goes as far as me leaving work early to go pick up her daughter from school and bringing her home, me skipping my hobbies because she needed something etc. etc.
I've had it with this system for a while, but I'm planning on moving in with my boyfriend who lives 180 km away, and on discussing the subject my sister and mother asked how I was planning on taking care of my sister and het kids... I responded I was not going to be able to help out as frequently as I used to and it would be more on an emergency basis they could count on my help...
Now both my mother and sister think I am being an egoist.. And prioritizing my own life above theirs.... But I feel like I do have a right to my own life... So... AITA?