Some 'kin are here because, well, where else would they be? This is Home. This phenomenon seems to be more common among 'kin who identify as more 'humanoid' species, and/or whose species are ones that have correlations to this-world mythology. They can be people with some trace of fae blood, born and awakened here because that's where their ancestors are from, or they can be people who've incarnated on this planet time and time again...and who see no reason or desire to incarnate elsewhere. There are most likely other possibilities that I'm not thinking of because I'm talking out of my ass, please help! -Anon

Some 'kin may also feel they are mostly 'at home' on Earth here - as a planet at least, if not the dominate human cultures - because they feel they are or have discovered signs that they are from a world very much like Earth. In some cases, they may feel/find they are from what could be seen as alternate versions of the same world occupying the same space. No quantum physics here - this is just how some people parse it all in terms of feelings and instincts.