It didn 't turn into a convenience issue until the current " me " generation , growing up in the 60 's decided they wanted to rebel against their " square " parents by having " free sex , drugs , and rock & roll ... " which , in part , produced the largest latchkey generation in world history , who then in turn had the highest numbers of abortions throughout the late 80 's and into the 90 's until it dropped below 1 million per year around 2001 and has stayed relatively steady at aprox .