What did Jesus say to the adulterous woman in John 8? Did he say, "hey yeah that adultery thing is pretty bad, but here's how you keep from getting pregnant!"???
No.
Notice, it says All, not "that which is convenient."
That's why they need Christ.
Evil is evil, even if it is the lesser of evils.
1 Cor 8:9
Be careful, however, that the exercise of your freedom does not become a stumbling block to the weak.