Imagine that Congress proposed a law that made postage free in the United States. Even in the digital age, this would be quite convenient. The only catch? In exchange for free mail, postmasters would be permitted to open your mail and read our letters and bills. The benefit, postmasters would insist, is they would know when you’re planning a family vacation. And then the post office could send you hotel recommendations or advice for the best restaurants and activities.

Convenient, right?

On second thought, you might rather pay the 55 cents for postage if it meant keeping advertisers from knowing the location and itinerary of your family vacation before you even get on the plane.

We prefer that strangers not read our mail — that’s why we’ve made doing so a federal crime punishable by up to five years in prison. We have blinds because we don’t want outsiders peering into our homes. We have laws to protect our health care records because we definitely don’t need strangers knowing our medical history.

So why should we treat our online identities — and privacy — any differently?

The answer to this question — posed by my friend Tom Siebel, a tech entrepreneur — clearly is that we should not. But if we are to secure our data in an increasingly digital world, should we expect government to singularly and effectively do the job for us? I would argue, no.