I'm curious how people choose who they would want to take their child; I'm assuming that people generally pick a sibling [or parents if young enough], which makes great sense, obviously, but I wonder how many seriously consider a friend instead? Often, a large part of that decision is hashkafa (essentially ideals), and I feel that a couple is often closer in hashkafa* to their close friends than to their siblings, in addition to the friends being a closer age match/having kids of their own of similar age [which may or may not make things easier].
Other factors I can think of:
* Feel free to disagree. I just notice that this seems to be the case not only in my family, but with each of my parents, with Serach's family, and with each of her parents... in addition to many other people we know.
- Number of other children