You asked why should businesses be forced to pay for birth control.
Fact, we 'force' businesses to do many things like industrial safety, pay into workers comp, routine safety training, and clean air on the shop floor. that costs.
But it also saves millions when the work force isn't turning over due to on the job injuries that are prevented these days. When workers don't lose everything because a worker, dad as mom stays home in the 'conservative' utopia, gets injured and there is no workers comp to pay the bills until Dad is back on his feet.
Just seems an odd place to draw a line in the sand. No insurance coverage for women's BC when at least 50% of women get it due to state mandates.