nah that's a terrible way to break it down.
western washington is what everybody already knows. no explanation needed.
then there's central washington, which is terrible.  dry, boring, and that's where most of the mexican farmworkers live (primarily in wenatchee).  weird people, just a bad place in general.
then there's eastern washington, which has a great mix of all seasons.  hot in the summer, cold in the winter, and rains a pretty average amount, not like seattle.  you will also find a lot of kids from eastern washington (mainly spokane) who are quite a bit like seattle kids.  hipsters, outdoor types, etc.  lots of forests, rivers, mountains, etc
i like western and eastern washington about the same, they're both dope.  central washington sucks, so please don't just consider anything east of the cascades eastern.  there is a pretty big difference climate/geography/people-wise between central and eastern, as there is between central and western.
also +k for saying intents and purposes instead of intensive purposes.