Healthcare here in the UK is totally free. I know only too well (to my detriment) that it's far from perfect, but I still believe it's a wonderful thing for all of society. Plus nobody needs to worry about whether they can afford to call an ambulance, and nobody is going to be bankrupted if they have a hospital stay.
If you have an accident or chronic illness, the system won't leave you alone. But they cover zero cost of prevention. E.g. regular check-ups, blood tests, therapies, unless you have noticeable symptoms are not covered, which is often too late to catch cancer, diabetes or cardiological illness at an early stage. My wife and I spend between £2000-3000 a year on these in various countries (to make it affordable). This number is not terrible, but far from free.
Second, most developers don't run an independent ISV with their spouse ... If you did this in the US you'd have to further compare: $200k in .eu with healthcare with, say, $500k plus double that in business income, or $1.5m per year.
I think healthcare is going to be FAR better for you in the US. This won't be true for everyone, maybe won't even be true for most, but for you there can be little doubt.