Ease Me In (The more guarded approach):
There are lots of great methods out there, but not all of them are a good fit for everyone. After talking with my health care provider, I decided that [method] was the best option for me. Different strokes for different folks, I guess.
Just Give It to Me (The no-nonsense tactic):
I can understand that you feel very strongly about your method of birth control, but I feel pressured and a little uncomfortable when you say that mine isn't as "good." This is what works for me, my partner, and my body, so I'd really like if you could try and respect my choice.