Lets say you want a nice apartment. You might also want a hot meal every day.
You could survive in a box, though, or by dumpster diving. Am I required to pay for your apartment and a your food? No.
Likewise you might use birth control so you can enjoy yourself. I don’t see where I have any obligation to pay for your birth control any more than I should pay for your food, or your apartment - all of which you are free to work and earn for yourself.