Today we typically think of bicycles as toys for children or as exercise machines for adults to help them maintain a healthy lifestyle. Yet out ancestors often had very different opinions about bicycles. As Michael Taylor explained in a 2010 paper, Protestant authorities saw cycling as a significant threat to morality, and tried to mold the sport into a Christian activity. The Women’s Rescue League of Boston even claimed that, following the closing of brothels, prostitutes were riding bikes to reach their clients.
You can read about this interesting change of morals in a short paper by Livia Gershon at http://daily.jstor.org/the-moral-threat-of-bicycles-in-the-1890s/ and in the longer Rapid Transit to Salvation: American Protestants and the Bicycle in the Era of the Cycling Craze by Michael Taylor at http://goo.gl/PBkVxv.