I just wrote a post which explained all.. and lost it. But I'm losing sleep over this so, brevity -
All siblings are a, batshit, b, overseas, c, we are low contact. variations on all of the above.
DH's parents I would trust implicitly, and I think we should put in a will right now, but realistically, might not be up to it in the next 3-5 years.
Have asked one couple who we would be happy to have charge, but in the end we all agreed it wouldn't work, reluctantly, after much discussion, and I think they were right. They are now overseas anyway.
Now cannot think of anyone either fit for the job (!), or who do not have their own children to think about, and I cannot imagine the difficulties that might cause them long term.
Our children would be financially very well provided for, so no problem except that this in itself is quite a lot to deal with.
Obviously people have to deal with this all the time, but any advice, thoughts? Who would I talk to about this in real life?