Nearly 16 years ago in these very pages, I wrote that "'one-size-fits all' rules for business ignore the reality of the market place." Today I'm watching some broad rules evolve on individual decisions that are even worse.

Under the guise of protecting us from ourselves, the right and the left are becoming ever more aggressive in regulating behavior. Much paternalist scrutiny has recently centered on personal economics, including calls to regulate subprime mortgages.

With...