In yesterday’s New York Times, Thomas Ricks penned an op-ed calling for the draft to be reinstituted. Ricks offers that under his plan for military conscription, libertarians who object could opt out provided they don’t partake of Uncle Sam’s other goodies such as federally subsidized mortgages, Medicare and college loans. As a libertarian who objects to a draft but who also received an NROTC scholarship in exchange for an active-duty commission, I think that Ricks is offering conscientious objectors a raw deal.

Those opting out, of course, could not refuse to pay the taxes that are used to fund government programs. That would be great for the government—compel people to pay for services that they will never use—but it is profoundly unfair, especially to young adults.

Mr. Ricks’s plan will certainly cost more money than our current all-volunteer force, especially in the near term. For example, we can expect tuition to skyrocket as soon as college administrators realize that the taxpayers are on the hook to pay for these new conscripts’ secondary education. The long-term savings that Ricks anticipates from changes to the military retirement are likely to prove equally elusive; past attempts to rein in costs for military retirees, including changes to eligibility rules, have repeatedly failed. There are sensible ideas for fixing the problem, but the politics are still really tough.

A draft is unlikely to save us money, but it will certainly abridge young people’s freedom. It is unfair to older adults, too, who would see their taxes rise. To add insult to injury, many older adults would see their tax dollars go to pay low-wage workers who would then be competing with them for jobs. Mr. Ricks thinks it’s outrageous that a fifty-year old janitor earns $106,000 a year, plus overtime; the janitor would disagree. Others who would suddenly be forced to compete with a taxpayer-funded horde of eighteen-year-olds include day-care providers, nurses and construction workers.

Libertarians want minimal government, as Mr. Ricks claims, but his plan would dramatically expand government power, abridge individual liberty and distort the labor market. Despite his claims that the draft would be beneficial to the economy, economists long ago concluded that the all-volunteer force is superior to conscription. Conscription is a superficially great deal for the government but a net loss for the taxpayer and draftee in hidden costs and lost freedom.

I am sympathetic to Mr. Ricks’s desire to avoid rushing headlong into other foolish wars. It is too easy for the United States to wage war and send resources—drones, special operations forces—to low-level conflicts. Congress has abdicated its responsibility to declare war and deficit spending kicks the monetary costs down the road. But the draft is not the answer. Instead, let’s begin our search for a solution by forcing the advocates for such wars to a higher standard of proof and holding them accountable when their rosy predictions of quick success prove erroneous.