> they don't require a biopsy; you're still free to not get the biopsy after the mri

Have you ever talked through a scan with an oncologist? Or are you just reasoning in the abstract because you feel you can first-principle it?

Also, seriously, you want to turn this into a communism debate? fwiw, capitalism has already decided. The vast majority of resources goes to anything but full-body scans, because actual experts made the call what's more effective. Repeatedly. On many cases.

But you are right, you are of course free to make bad decisions with your money, and there will always be somebody happy to separate fools from their money. Capitalism does work.