Ive lived ALL over, out of the country, east coast, west coast, mid east, mid west (military brat)..
I lived in SF when I was a little kid, my sister was born there.. and man let me tell you, my parents are obsessed with one day going back.. so is my sister.
The west coast is SO different.
Its alot more expensive to live, yeah, but income there is alot higher, too.
They wont have professional jobs there that wont allow someone to live decently well. All depends on where you're at