Why (the need to) experiment on someone else
"Physician, heal thyself"
Helping others or helping your own golf-game
Inventing new dis-eases everyday and thus their causes
which must be thwarted by you & your panoply of pills
of course
You've no idea what all that slicing & dicing ("First do no harm") will cost you in the end (it's gonna hurt like Hell... oh wait...)
Every temperature you take
Every diagnosis you make
I'll be watching you
Don't say you weren't warned