"Between 1990 and 2008, pregnancy and abortion rates for women in their twenties dropped dramatically, a new study revealed today. Pregnancy rates fell by 18 percent, while abortion rates dropped by a third. One of the biggest influencing factors in this decrease is the growing accessibility, use, and options for birth control. Contraceptive use is the best way to prevent abortions in the U.S."The looniest among us are those who are against abortion and the pill.