Instead, think of this. Whether they are necessary or not, the TSA can use them. They can pat you down respectfully, or it can turn into groping. It might not--but it might. They can get an image of your naked body. They might treat this respectfully, and the image might not be saved. But it might.
It all really all depends on what the TSA does, as an institution, and what those individual agents do. You have no ability to determine the outcome.
You can rage and vent and film the episode on your iPhone. You can write to your congressman and call a talk-show to complain.
But, ultimately, they can do what they want, and you will do what they want, or you will not fly, or you will go to jail or pay a fine.
They have all the power. We hope they will use it well, but can't do anything about it.
Now, consider the healthcare situation.
The government will be able to call the shots. Hopefully, they will be prudent and humane. Hopefully they will be efficient. Hopefully they will not play favorites.
But it all depends on what they do--we have no power in this situation.
Is this good? Is this wise? Will it really lead to a better life for people?
A government that can mandate an hourly employee to touch your genitals and inspect your naked body is a government that can do pretty much anything it wants. We can hope it will use that power wisely. But, unless things change, hoping is really all we can do.
Is that a tenable situation? Does history and a knowledge of human nature give us reason to think our hopes will be validated?