Is OTHER wrong in the post ? POST : Hi all 

Just a bit of context recently i lost my nan who was the primary carer for my uncle whose 37 and has Down's Syndrome.

In response to this my mom has had to pick up the pieces and start caring for my uncle, she has always maintained the position that should something ever happen to my Nan she would always take of my uncle. She has since moved into my nan's house and that's that.

Its worth adding that my Mom has two other adult siblings, my aunt and their older brother. Neither of which have expressed any inclination to care for my uncle now or ever and don't want to take any responsibility.

The problem i have right now is that my mom wants to make me a legal guardian and carer for my uncle should anything happen to her. This would make me responsible for his well being, health, finances etc. Essentially whats expected from a parent looking after a child. 

Due to the age of both my mom and my uncle it is inevitable someone will have to care for my uncle after my mom for potentially 20+ years. Thing is she never asked me if this was what i wanted, she just assumed i would care for him no questions asked. When i told her i wanted more time and didn't want to commit to anything just yet, She screamed at me, said i was a selfish \*\*\*\* and put the phone down on me. I haven't spoken to her in 12 hours or so and i can't stop thinking about it.

Of course i love my uncle to bits and would never want to see him end up in the system/sheltered accommodation but the thought of having to care for an older adult with learning difficulties and health conditions scares me, i'm only 23 and still in uni myself. I had plans to move abroad, go travelling etc. Things i wouldn't be able to do if i had to care for my uncle full time.

I mean if the chips were down and no one else came forward, i would do it. But i would be saying goodbye to my life to care for someone else's.

AITA for not wanting to jump into the fray straight away? Is this something that should be expected of me, even though there are far older members of the family in a better position than me?  Should i accept there are things in life we can't change and this is one of them?