If, as you suggest, contraceptors go to hell, you're going to have plenty of room in heaven. ;)
Our belief rests first with the Divine Mercy of Christ revealed in his death on the Cross. For this reason we believe there is a place of cleansing called Purgatory where offenders who did not fully understand the nature of their sin are given an opportunity for prayer and repentance and cleansing through the work of the Holy Spirit. This belief is not held by Protestants in general, but for Catholics it is a comfort to know that regardless of our failings, ignorances and stupidities that lead to sin, God who is Love and Mercy and Justice is willing to continue the work of cleansing the soul so that it may behold Jesus face to face.
God willing I shall receive mercy enough to be drawn into Purgatory where He may temper my temper and purify me of all unrighteousness. Until then I must work diligently through the practice and acquisition of virtues that are contrary to my besetting sins. This is very difficult at times, but it is part of the Cross that is carried having to do with one's own fallen nature being redeemed by Christ with every breath and every day that life is given to me.