I agree that you don't need to worry about those things.
I've been involved in a fair bit of hiring, and for us, the first cut is on technical credentials (education, experience). After that, you want to make sure the person will not be a headache (actually can do the job independently, do not have "flags" on their resume that would indicate they had serious interpersonal problems in past jobs). After that we're looking for "fit" -- do they add new skills to our group, does their personality mesh with the existing personalities.
Really, we couldn't care less about their finances or what they do at home. We just want them to do their job well without causing any trouble.
However, if we thought the person might not stay with us for long (could be the case with an FI person), then that might lead to choosing someone else who seemed just as good. It takes our time and effort to get a new person up to speed, so we don't want to do that more than necessary. On the other hand, an FI person could be a great fit for a short-term position, like filling a mat-leave.