Although possibly apocryphal, this quote by Oscar Wilde is both witty and cautionary:
The use of a tax to shape social policy is nothing new. A Bachelor tax was enacted in Mussolini's Italy, for example:
Today there are many that feel a tax break on joint marriage income also represents a bachelor tax.
An early precedent for the Bachelor tax was imposed by Augustus:
Ancient Rome was a source of unusual taxes, indeed. The famous "urine tax" of Nero and Vespasian is remembered even today:
https://en.wikipedia.org/wiki/Pecunia_non_olet
https://en.wikipedia.org/wiki/Bachelor_tax
https://taxfitness.com.au/Blog/bachelor-tax