[1] https://www.mckinsey.com/capabilities/mckinsey-digital/our-i...
[1] https://www.mckinsey.com/capabilities/mckinsey-digital/our-i...
regarding the rest - with german pay you wont have money to travel across Europe. your best bet will be "backbacker" style travel on budget - which is hard to do with kids.
and dont get me at the quality of their daycares....
Unlike in the USA, these people in Germany don't get their insane voices boosted by the ballot box equivalent of Affirmative Action (aka the Senate and Electoral College). Their views have remained far from the PM's office.
And Germans have plenty of money (and vacation days) to travel across Europe, in fact you will encounter them pretty much everywhere.
The quality of care in German daycare centers is still not great despite recent improvements, I'll give you that.
I would consider moving to Germany before considering the UK. I certainly wouldn't ever move to the US.
The only place you mentioned I would rank above Germany is Switzerland.
They even will accept english if you're a good developer as lingua franca instead of german. YMMV