Think this through with me:
1) People go on fewer dates so they use fewer condoms, reducing the rubber demand.
2) Shoe companies can buy rubber cheaper as supply is more plentiful.
3) They drop prices and runners benefit, until.....
4) Nancy Pelosi decides that the government needs to give out even more condoms, as there are actually children being born, and the price of rubber goes up again.
The conclusion--the price of shoes is inverse to the amount of sex you have.