[sottol]

I'd like to say again that imo there's not much downside to trying. It may end up not being better in all the ways you'd hoped but surprise in so many other ways. It will most definitely be a great experience that will shape and enrich your lives.

Another option might be to maybe just leave Berlin for a different part of Germany or move to another European country. Portugal is very nice, lower COL and I've heard of techies moving there. It wouldn't make a huge difference in taxes but general cost of living should be lower and afaik no visa and work permit issues.