I don't own a house here in the Bay, I dump everything in very diversified index funds and some rentals out of state, since I'm not interested in staying in this place long term and play the million dollar mortgage roulette.
The day I call it quit, me and my partner (she does well too) can move to Austin TX, or anywhere else really (we're both immigrants with citizenships in really really cheap countries), with our fat liquid assets, and not having to worry about necessarily finding work in my 40s. At least that's my very optimistic plan, it might completely not turn out like this, or I might die tomorrow.