Family Order

I never considered before that I might be caring for an older siblings children. I have always been "Uncle J", but never like I have to be now. Family issues have brought a young niece and nephew into my little apartment. Luckily its only for the weekends over the next month, but still...it rubs me pretty strangely. Grama and grandpa get the kids at night, older sister takes them to school during the day...and we get the kids over the weekend?!?! Raw deal.

I have this innate order...family order...that is just screaming justice. Bren is the youngest child...I am the youngest child...why can't the higher ups do their duty? Inner monologue persists...Oh yes, sister has abusive hubby...kids cant stay there overnight. Oldest? Nope...to far away. Wait! Youngest siblings are close - give 'em the kids! Wait...youngest siblings is...ME... So, yes, there was little choice in this family order. But it doesnt make it feel any nicer. I struggle with this choice because it honestly wasn't a choice - it was forced upon my household. Welcome to being an adult. Just look at it as parental training. Wait a minute...the alter ego kicks in...what? Parental training? More like training to be a high school counselor! What are you thinking, idiot! OK...enough of that...I think I've made my point by now. On to the questions...

Is it selfish to think that older siblings...parents...grandparents...people higher in the family order of responsibility...should step in to avoid forcing the young lings into a situation such as this?

Bren and I have been married for just barely a half a year now...we're not so rich...is it selfish to be angry when parents don't at least compensate us for food...for entertaining...for THEIR CHILDREN?

These kids lack...lets say this with tact...proper direction from their parents...but how do I know any better for them? How do I treat a kids that isn't mine?

I'm sure you'll be hearing more on this - I haven't even gotten close to processing this in whole. This whole situation is so disturbing...this is so confusing...