why do so many of my relatives come here for health care and so few go abroad from here? even more telling is why do my doctor relatives send their family here when the shtf health wise
Because those are anecdotes that you drudged up to make this point, but don't actually reflect a statistical trend or a hard measure. Hard measures and statistics are available, and they definitively establish 1) Care is much, much more expensive across the board in America and 2) The results are not across the board better.
The reason Americans don't go routinely abroad to the UK or Australia for care is that they generally aren't allowed - most of the socialist medicine systems only accept patients from countries with reciprocal arrangements. Lots of Americans do go abroad to third world countries for surgery, because they can't afford it in the states.
I could just as easily say "Why does everyone I meet in any other industrialised country scratch his head and wonder what the heck we accept the dismal US system for?" - which is true. I haven't met a single person who envies the US medical system and wants in his or her country.
Btw, the prices for entirely private care are lower in these countries too - it's not just the socialist medical system that is more efficient. Of course, private care in Australia is less efficient than state care on price; it costs more to do the same procedures. But the wait lists are shorter.