The UK is still one of the biggest economies in the world and the currency is extremely strong. It’s a far bigger economy than Dubai for example.
If you compare the UK globally rather than mainly with other wealthy Western European countries, it remains an unusually advantageous place to live on quite a few measures.
there is very low corruption and high personal freedom. It’s extremely safe by world standards. Gun deaths are exceptionally rare.
the NHS has real problems with waiting times but the fundamental protection is enormous: serious illness doesn’t normally carry the additional risk of financially ruining a family.
The UK has a strong school system overall and an extraordinary concentration of internationally important universities — Oxford, Cambridge, Imperial, UCL, LSE, Edinburgh.
London in particular is one of the world’s major centres for finance, law, technology, medicine, media, academia and professional services.
Benefits, state pensions, disability support, social housing, free schooling and NHS healthcare provide considerably more protection than exists in much of the world.
The weather gets complained about endlessly, but Britain has remarkably few natural hazards: virtually no destructive earthquakes, hurricanes, serious wildfires, extreme freezes or lethal heat for most of the country.