> But what if the market shifts and salaries go down?

If youre making decent pay & enjoy your job that sounds like a dream.

Enjoy your life, work isn't everything. Bay Area isn't that nice. You are likely able to live somewhere better (or can move somewhere nicer). I regret moving away from family & friends (albeit I do like the area I'm in now). Spend time with them.

You won't be worrying about your paycheck on your deathbed, but rather whether you lived a fulfilling life. I am certain more pay for less interesting work doesn't match that description ;)