Let's talk about you growing older. The closer you're to 50 the more difficult it gets to find a new job. You get laid off in a major downsizing round. Your COBRA healthcare plan is $2K+/month which incidentally is comparable to your 1-bedroom apartment rent. It could take you a few months to find the next job. Or longer, people discuss it on this very site every other week.

The FAANGs and the capital gains are real but for a minority of us. If you're single and under 30 the Bay Area is a top destination for sure. You won't be that person forever though.