I actually have looked it up before and found that you are not correct.
The 'Preventive Care' Myth | National Review Online
A Doctor’s View of Obama’s Healthcare Plans - WSJ.com
http://www.nytimes.com/2008/10/07/health/views/07essa.html?_r=0
Prevention Will Reduce Medical Costs: A Persistent Myth - Health Care Cost Monitor
Preventive Medicine
An Apple a Day
Michael Fumento: The Preventive-Care Myth
The myth that preventive medicine saves money
https://www.actuarialoutpost.com/actuarial_discussion_forum/showthread.php?t=172909
Five Myths About Health Care - Forbes
Should I go on?
True preventive care costs nothing or almost nothing. Exercise and proper eating and staying away from tobacco and excess alcohol and generally being safe with your body. These aren't the types of things that insurance can pay for.
As far as screening, thats really not preventative care either, it's looking for illnesses. Screening is great for the individual, it's not a money saver for society. While early detection can be a big cost saver for individuals who are found to have breast cancer, most individuals do not have breast cancer, and thus in aggregate we actually spend more screening for breast cancer than we spend treating breast cancer.
You might not want to take the WSJ editorial page to seriously on preventive care, or all your other redundant right wing editorials that were written in response to the horror of Obamacare wanting to pay for preventive services. The WSJ and Forbes editorial staff is in firm agreement that the best medicine is being wealthy... why else would wealth correlate with lifespan so well?
Preventative care is often an excellent use of resources - its way cheaper to prevent something with your $3/mo bp pills than to have someone pay for a stroke, an ICU stay, and nursing home care for a decade.
But your bp pills dont really cost $3 per month, do they?
First of all, you need to get seen by a physician, to determine if you bp elevation is essential hypertension, or if it is something more malignant - like an adrenal tumor. Then you have to have the physician determine if you have any symptoms or signs that you may have a compliiction from high bp - neurologic, renal, or cardiac. Then he has to decide on an appropriate treatment given your situation - lots of bp pills cost $3, all might not be appropriate.
All of that stuff costs money- physician time, nursing time, BP reading devices, etc.
That doesnt even go into the sunk costs of developing that cheap drug you have. Someone, sometime, spent millions in research and development to prove that drug was safe and effective.
So your simple three dollar bp med is actually not cheap for the system as a whole. But its way, way cheaper than a stroke or heart failure. And thats what preventive medicne avoids.
Not many people need insurance to pay for the three dollar medicine. But many people need it to pay for the rest. And thats really expensive to treat.
So for your breast cancer screening example. We pay more to screen than to treat (thats news to me, but I'll go with it). Is that wrong? Crazy? Well, given the fact that we are cutting treatment costs down TREMENDOUSLY with screening, that is exactly what we want to see. The investment into screening is cutting down treatment costs... in this case, so much that treatment is a smaller part of breast CA than detection. Thats great! Lots more healthy people walking around, the investment we make is to make people healthy, not slam disease, and millions of women walking about knowing they dont have cancer because they were screened.
Yes, preventive care costs money, but the payoff comes in longer lives. In fact , we look at all of the preventive strategies by looking at QALY- quality adjusted life years, and determine how much you are paying for a year of quality life (i.e. life not seriously ill). What is a QALY worth to you? How much would you pay for an extra few at the end of your life? You seem to be saying not much, but I bet when you get to that point, you'd give all you have.