If I wanted to live near all of my family, I would state that as a preference, and explain it in my profile (if I was looking for a specific area, only). That's why CM is a great tool, you can be very specific, or very vague in your searches.
As a side note, from many of your posts, it is "you", you seem to be finding fault. Let people "be", there is no "correct" way of going about this.
I actually said that in my profile & pondered whether it showed selfishness or truth. I decided to err on the side of caution and let it stand as is. I am highly adaptable & know that if I were in a LDR that moved toward a discussion of who moves where, that I would follow my heart in the matter..
Everyone has their own personal preferences as to being close to family. I become envious of those who are within arm's distance of their grandkids. Finally I am less than a mile away from my grandson--but he was 9 when I moved here & I missed a lot of his growing up. Now I have a soon-to-be-2-year-old granddaughter who is quite a distance away. How I long to spend time with her!
I don't know if this desire is more peculiar to women than men--I would hate to stereotype anyone. I'm simply stating my own preference & totally respect how others feel about this issue.
I'm with you; I don't think one should put limits on where one lives.
There might be an exigent or temporary situation that exists that requires it, but this should be the exception rather than the rule.
(it sounds as if the person is not willing to jump into the pool at the deep end, but would rather stay in the shallow end where it's much more "comfortable.")
Otherwise, I think it's a foolish question. How can I decide I'm willing to relocate near your family when I don't even know you yet?