I love her, I do. We have had fun times and she has given me great advise and guidness when I needed it.

However, she has been an addict since...well as long as I've known her. And it's only gotten worse and worse.

As of the past few years she only calls me; if she needs money or rides to places (sometimes tricking me into giving her rides so she can buy drugs) or food, or whatever. 

Basically, only if she wants something. Never to talk or just hang out.

Some relevent info: Our mother was an addict and I cut her off until I found out she was dying and set up some "healthy boundaries" when bringing my mother back into my life.

I regret...not spending more time with my mother, before she died. I regret cutting her off.

But the difference is, Mom never asked me for money, or made me feel used, even when I didn't set up my boundaries. 

Older sister does, constantly.

So, I've cut her off, but from other family members, I hear how much shes struggling

I've tried everything with her, even set up boundaries. But she constantly manipulates me out of them.

While other family members, are...I guess enabling her? That's my opinion, but they think they are helping her.

No family member has said I'm an asshole or anything but...remembering my regret with my mother, I feel like am asshole.

Part of my brain says "your an asshole, help/spend time with your sister while you have the chance" while another part of my brain says "nah your protecting yourself, she can go fuck herself"

So, to the lovely people here, what do you think?  Let me know if you need more info.