Chesterton's meta-fence: "in our current system (democratic market economies with large governments) the common practice of taking down Chesterton fences is a process which seems well established and has a decent track record, and should not be unduly interfered with (unless you fully understand it)".
And similarly, here's a quotation from economist George Stigler: “every durable social institution or practice is efficient.” ("Efficient" has a specific meaning in context. Don't over-extend it to "good" or similar ideas.)