Oh lovely, another UK bashing thread. 🙄 I need a group of shot glasses!
I know you're not bashing it @hnwis but your DH clearly is, and so are the 'I must bash the UK' posters on here (who always run like the wind to berate the UK on this type of thread!) with comments like 'The UK is FUCKED!' Ya know, the same posters who WILL. NEVER. LEAVE. THE. UK. 
Re; your DH, this would be a dealbreaker for me, because whilst I do love travelling, there's no way in hell I would leave the UK. He would be going on his own.
How - and why on earth people think they are going to have some Utopian, blissful, wonderful, carefree life in another country just baffles me. You will still be working, still paying taxes, paying a mortgage or rent, possibly paying for your child's education, paying for childcare, paying for healthcare in most countries, and facing people who do NOT want you there.
It will be no different to living in the UK, (and will likely not be better,) and you may pay higher taxes, struggle to pay medical bills, and not have a very prosperous old age, because their pension schemes may not be very good.
Oh, and the hilarity of some people thinking that they can just pick their country of choice to move to, and they can just go, pick a house, pick a job, and everything will be tickety boo! Your country of choice might not want you mate!