The couple I worked for started investing with siblings and their father after their dad had retired from being a miner for years. 

I feel desperate.My scenario is this: My father has a trust with me and my siblings.

My mother left a country with no opportunity alone to bring my siblings and myself here.

To avoid that nightmare ideally you should name a sibling or another 'qualified person' as the managing member of the LLC (not yourself).

I once had a situation like this and it turned out that my offers were being refused because there were a couple of owners (siblings that inherited the property) that could not agree about what to do with the prop, so it just sat.

ALTHOUGH, with rates where they are now, having mom & dads free & clear home, pretty incentivizing to tell siblings "hey, I will buy the place but let me pay all of you, not the bank, you give me a mortgage on it, i pay you directly, were family.

In that situation, you would have to get quitclaim deeds from your siblings, and also file an affidavit in the real estate recordings explaining about the death and who the heirs are.

If my family and I (parents and siblings) were discussing whether to buy or lease a new car, they would buy. 

I'm not sure how you could buy something unless your parents / siblings are wealthy and want to tie their income to your house or lend you cash.I've seen some parents buy student housing - as in they own the house that 4-8 kids live in paying per bedroom rent.

I have convinced my siblings that we should buy a property (4bd, 4bth) instead of renting and throwing away their ~$2.2K/month.