Edit: To back this up a little more:
To buy a median house in SF you need to make ~$142k.
http://www.washingtonpost.com/blogs/wonkblog/wp/2015/03/08/m...
The 95th percentile in income is WAY higher in SF than anywhere else, and so is the cost of living.
https://twitter.com/conradhackett/status/578004292151341056
My opinion is that if you're not clearly putting me in a comfortable position financially, why would I ever make such a sacrifice?