It's saved my life twice. A massive motorcycle crash, including broken pelvis. And extremely late diagnosis of hiv.
Saved the life of my son and his mother.
Had some lesser emergency admittances to hospital.
My son is now very ill and gets good consistent care.
Other than plain facts, there's something no one would understand outside of the UK. There's a compassion in the NHS. That'll be greeted with 'group hug' jeer, no doubt. Divorcing care and money has intangible benefits. The NHS is mostly universally embraced by people of all political leanings, it's not a left wing thing, again something people in a much more individual-first society won't understand.
What's your experience of a publicly funded healthcare system?